Question: The Eighth Happiness stars this actor, regarded as one of four what?
Context: Japanese collective unit E-girls have released four studio albums, one greatest hits compilation album, three live DVDs, 39 music videos, and 18 singles.  E-girls are a unit composed of three sub-groups: Dream, Happiness and Flower, and three original members.  Additionally, the band also incorporates two other units; Rabbits and Bunnies, who are yet-to-debut groups and serve under the management LDH, managed by Exile Hiro.  They debuted with their single "Celebration!" , which generated moderate success in Japan.  Follow-up releases managed to achieve more notability, but their single "Follow Me!" , became their first single to gain a certification by the Recording Industry Association of Japan (RIAJ)—receiving a double platinum award. Stas Namin is a cult figure in Russia.  He’s one of the founders of Russian rock music, the creator and leader of the legendary band The Flowers, which has sold more than 60 million records on the territory of the USSR and Eastern Bloc countries over its half-century of existence, and the author of many popular songs including "Summer Evening", "Nostalgia for the Present" and "We Wish You Happiness!"  He’s the organizer of the country’s first independent production company, (SNC), from which many Russian stars emerged; among them the rock band Gorky Park, which Namin created; the organizer of the country’s first pop and rock festivals, including the 1989 Peace Festival at Luzhniki Stadium with world-class headliners, the "One World" and "Rock from the Kremlin" festivals and others; the founder of the country’s first private enterprises (record labels, radio stations, TV networks, concert agencies, design studios and others), which broke the state monopoly and gave rise to the modern Russian show business; and the founder of Russia’s first non-governmental symphony orchestra, the country’s first Western-style musical theatre and other groups. Guo Ziyi (Kuo Tzu-i; Traditional Chinese: 郭子儀, Simplified Chinese: 郭子仪, Hanyu Pinyin: Guō Zǐyí, Wade-Giles: Kuo Tzu-i) (697 – July 9, 781), formally Prince Zhōngwǔ of Fényáng (汾陽忠武王), was the Tang dynasty general who ended the An Lushan Rebellion and participated in expeditions against the Uyghur Khaganate) and Tibetan Empire.  He was regarded as one of the most powerful Tang generals before and after the Anshi Rebellion.  After his death he was immortalized in Chinese mythology as the God of Wealth and Happiness ("Lu Star" of Fu Lu Shou).  Guo Ziyi was a reportedly a Nestorian Christian. Kimiya-yi Sa'ādat (Persian: کیمیای سعادت‎ ‎ , English: The Alchemy of Happiness ) was written by Abū Ḥāmid Muḥammad ibn Muḥammad al-Ghazālī, a Persian theologian, philosopher, and prolific Sunni Muslim author regarded as one of the greatest systematic thinkers of Islam.  The Kimiya-yi Sa'ādat was written towards the end of his life shortly before 499/1105.  During the time before it was written the Muslim world was considered to be in a state of political as well as intellectual unrest.  Al-Ghazālī, noted that there were constant disputes regarding the role of philosophy and scholastic theology, and that Sufis became chastised for their neglect of the ritual obligations of Islam.  Upon its release, the Kimiya-yi sa'ādat allowed al-Ghazali to considerably reduce the tensions between the scholars and mystics.  Kimiya-yi sa'ādat emphasized the importance of observing the ritual requirements of Islam, the actions that would lead to salvation, and avoidance of sin.  The factor that set the Kimiya-yi sa'ādat apart from other theological works at the time was its mystical emphasis on self-discipline and asceticism. In 1999 Big Finish began producing audio dramas featuring the Fifth, Sixth, and Seventh Doctors, and have since developed the pattern of thirteen releases per year, one every month, with two in September.  From 2001 to 2007 the monthly range also included releases featuring the Eighth Doctor with his companions Charley Pollard and, later, C'rizz, but these were ended due to the simultaneously-running "New Eighth Doctor Adventures" which ran from 2006 to 2011 and featured companion Lucie Miller.  From 2008 to late 2011, only one Eighth Doctor release was produced for the monthly range: "The Company of Friends" (featuring companions from other media to the audio plays, and the historical figure Mary Shelley).  The Eighth Doctor returned to the monthly range in a trilogy of adventures with Mary Shelley in October 2011.  s of 2016 , the monthly audio series features the Fifth, Sixth and Seventh Doctors, in four seasons of three audio plays, each featuring the same Doctor and, to a reasonable degree, companion/s, being released consecutively, along with one special anthology release per year.  In other words, four three-release trilogies and one other standalone anthology audio are released every year. Tutte l'opere d'architettura et prospetiva ("All the Works of Architecture and Perspective") is an architectural treatise by Italian Renaissance architect Sebastiano Serlio (1475-1554).  Serlio is sometimes regarded as one of the most important.  The treatise is composed of eight books, the sixth of which was lost for some centuries and the eighth of which was not published until relatively recently.  The eighth book is not always considered to be part of the treatise.  The first five books cover Serlio's works on geometry, perspective, Roman antiquity, the Orders and church design.  The sixth illustrates domestic designs ranging from peasant huts to royal palaces, providing a unique record of Renaissance house types, including up-to-date fortresses for tyrants and mercenaries as well as Serlio's unbuilt design for the Louvre.  The seventh book illustrates a range of common design problems ignored by past theorists, including how to remodel, or 'restore', Gothic façades following antique principles of symmetry and proportion.  The eighth book, called "Castrametation of the Romans", reconstructs a Roman encampment after the description by Polybius, followed by a military city and monumental bridge supposedly built by the Emperor Trajan.  With its forum, consul's palace and baths, the book is part-fantasy and part-archaeology, quite unlike Serlio's other more practical works. The discography of The Weepies, an indie pop-folk band fronted by singer-songwriters Deb Talan and Steve Tannen, contains five studio albums, one extended play and six singles.  The Weepies released their first album, "Happiness," through an independent label.  After signing with Nettwerk, they released their second album in 2006, "Say I Am You".  In that same year, they released an "Live Session (The Weepies EP)" featuring songs from "Say I Am You", four songs from Deb and Steve's previous work, and one song from their future album "Hideaway'".  In 2008 they released their third studio album "Hideaway".  In 2010, they released their fourth studio album, "Be My Thrill".  In 2015, they released their fifth studio album, "Sirens". Jacky Cheung Hok-yau (born 10 July 1961) is a Hong Kong singer, songwriter and actor.  With more than 25 million records sold as of 2003, he is regarded as one of the "Four Heavenly Kings" and has been deemed the "God of Songs" of Hong Kong. The Eighth Happiness (八星報喜) is a 1988 Hong Kong comedy film directed by Johnnie To and starring an ensemble cast of Chow Yun-fat, Raymond Wong, Jacky Cheung, Carol Cheng, Cherie Chung, Fung Bo Bo and Fennie Yuen. I'm Still in Love with You is the fifth studio album by the American gospel and soul singer Al Green, released on October 23, 1972, on Hi Records.  Recording sessions took place during 1972.  The album was produced solely by Willie Mitchell.  The album peaked at number four on the US "Billboard" 200 and number one on the US Top R&B/Hip-Hop Albums and produced four singles: "Love and Happiness" which was rated ninety-eight on "Rolling Stones"'s 500 Greatest Songs of All Time as well as "I'm Still in Love with You" and "Look What You Done for Me" which were top five hits on the US Pop Chart.  In 2003, the album was ranked number 285 on the 500 greatest albums of all time by "Rolling Stone".
Answer: Heavenly Kings