Title: Emperor Yang of Sui
Content:  Yang Guang was born in 569, during the reign of Emperor Wu of Northern Zhou. His parents were Yang Jian, the Duke of Sui, and Yang Jian's wife Duchess Dugu Qieluo; his maternal grandfather was Dugu Xin, a prominent military general and official. He was his parents' second son, after Yang Yong, and he had at least one older sister, Yang Lihua, who became the wife of Emperor Wu's crown prince Yuwen Yun (the later Emperor Xuan) in 573. He was considered handsome and intelligent in his youth, and of Yang Jian's and Duchess Dugu's sons, they favored him the most. Sometime during Northern Zhou, on account of Yang Jian's achievements, he was created the Duke of Yanmen. In 580, Yang Jian seized power as regent after Emperor Xuan's death. In 581, he had Emperor Xuan's son (by the concubine Zhu Manyue), Emperor Jing, yield the throne to him, ending Northern Zhou and establishing Sui Dynasty as its Emperor Wen. Emperor Wen created Yang Yong crown prince and created his other sons imperial princes. Yang Guang thus received the title of Prince of Jin.
Title: Emperor Yang of Sui
Content:  Emperor Yang of Sui (隋煬帝, 569 – 11 April 618), personal name Yang Guang (楊廣), alternative name Ying (英), Xianbei name Amo (阿摩), also known as Emperor Ming of Sui (隋明帝) during the brief reign of his grandson Yang Tong) was the second son of Emperor Wen of Sui, and the second emperor of China's Sui dynasty. Emperor Yang's original name was Yang Ying, but was renamed by his father, after consulting with oracles, to Yang Guang. Yang Guang was made the Prince of Jin after Emperor Wen established the Sui Dynasty in 581. In 588, he was granted command of the five armies that invaded the southern Chen dynasty and was widely praised for the success of this campaign. These 
Title: Yang Xiu (Sui dynasty)
Content:  Yang Xiu (楊秀) (died 618) was an imperial prince of the Chinese dynasty Sui Dynasty. He was a son of Emperor Wen and his powerful wife Empress Dugu, and during most of his father's reign was given great control over the modern Sichuan and Chongqing region. In 602, after accusations were made that Yang Xiu was abusing his power, Emperor Wen removed him from power and reduced him to commoner rank. He was subsequently held under house arrest for the rest of Emperor Wen's reign and the reign of his brother Emperor Yang. In 618, after the general Yuwen Huaji killed Emperor Yang, he and his co-conspirators briefly considered declaring Yang Xiu emperor, but ultimately decided not to, and instead executed Yang Xiu and his sons.
Title: Yang Xiu (Sui dynasty)
Content:  It is not known exactly when Yang Xiu was born, but it is known that he was the fourth of the five sons of Yang Jian and Yang Jian's wife Dugu Qieluo. As the third of his older brothers, Yang Jun, was born in 571 (his younger brother, Yang Liang, similarly has an unknown birth year) and he was already born at least by the time that Yang Jian seized the throne from Emperor Jing of Northern Zhou, ending Northern Zhou and establishing Sui Dynasty as its Emperor Wen in 581, he would have been born sometime between 572 and 579. In 581, after Emperor Wen took the throne, he appointed both of his sons as imperial princes, and Yang Xiu was appointed the Prince of Yue.
Title: Emperor Yang of Sui
Content: [[Image:Simple gold crown.svg|15px]] Yang Guang, Emperor Yang of Sui ; Yang Zhao (楊昭) (584–606) ; Yang Dan (楊倓) (603–618), Prince of Yan (燕王), Zhao's son with Lady Liu the Elder (大刘良娣), killed under Yuwen Huaji's order ; [[Image:Simple gold crown.svg|15px]] Lord Huangtai (皇泰主) (604–619), personal name Yang Tong (杨侗), Zhao's son with Lady Liu the Younger (小劉良娣), bestowed by Wang Shichong as Emperor Gong (恭皇帝), later killed under Wang's order ; [[Image:Simple gold crown.svg|15px]] Emperor Gong (恭皇帝) (605–618), personal name Yang You (楊侑), Zhao's son with Consort Wei (韦妃), died after his abdication in favor of Li Yuan, Imperial Duke of Tang ; Yang Jian (楊暕) (585–618) ; Two elder sons, murdered by Yuwen Huaji in 618 ; 
Title: Yang Zhengdao
Content:  Yang Zhengdao was a member of the House of Yang, the ruling family of the Sui dynasty. His father Yang Jian was the Prince of Qi during Emperor Yang of Sui's reign. In April 618, a mutiny led by Yuwen Huaji massacred Emperor Yang, Yang Jian, and many members of the family while they were touring in Jiangdu. Empress Xiao (Yang Jian's mother) and presumably Yang Zhengdao's pregnant mother were among those spared. Yuwen Huaji seized them and took them north, but was in turn captured by the rebel Dou Jiande in 619. Dou Jiande killed him in the name of Sui and made the new-born Yang Zhengdao Duke of Xun. At 
Title: Emperor Yang of Sui
Content: Empress Min, of the Lanling Xiao clan (愍皇后 蘭陵蕭氏; 567–647) ; Yang Zhao, Emperor Xiaocheng (孝成皇帝 楊昭; 584–606), first son ; Yang Jian, Prince of Qi (齊王 楊暕; 585–618), second son ; Princess Nanyang (南陽公主; 586–630), first daughter ; Married Yuwen Shiji, Duke Xincheng (572–642) in 599, and had issue (one son) ; Pin, of the Xiao clan (嬪 蕭氏) ; Yang Gao, Prince of Zhao (趙王 楊杲; 607–618), fourth son ; Unknown ; A daughter who married Li Shimin of Longxi (隴西; 598–649), and had issue (two sons including Li Ke) Consorts and Issue:
Title: Yang You
Content:  Emperor Gong of Sui (隋恭帝) (605 – 14 September 619 ), personal name Yang You (楊侑), was an emperor of the Chinese Sui dynasty. He was installed as a puppet emperor by Li Yuan, and after Emperor Yang of Sui died, Li then became the founding emperor of the Tang dynasty and had Yang You executed. Traditionally, he was considered the last emperor of the Sui dynasty because he was succeeded and executed by Li Yuan (Emperor Gaozu of Tang), the founding emperor to the succeeding Tang Dynasty. However, after him, his brother Yang Tong claimed the throne and continued 
Title: Emperor Wen of Sui
Content:  The Yang clan of Hongnong (弘農楊氏)  were claimed as ancestors by the Sui Emperors, similar to the Tang Emperors' claim of the Longxi Li clan. Yang Jian's clan claimed descent from the Han Dynasty general Yang Zhen. Yang Zhen's eighth-generation descendant Yang Xuan (楊鉉) served as a commandery governor for a Yan state (Former Yan or Later Yan) during the Sixteen Kingdoms Period, and his descendants subsequently served the Northern Wei Dynasty. Yang Jian's father Yang Zhong (楊忠) followed the late-Northern Wei general Yuwen Tai and later became prominent in the branch successor state of Northern Wei, Western Wei, under Yuwen's regency. Yang 
Title: Sui dynasty
Content:   Emperor Yang of Sui (569–618) ascended the throne after his father's death, possibly by murder. He further extended the empire, but unlike his father, did not seek to gain support from the nomads. Instead, he restored Confucian education and the Confucian examination system for bureaucrats. By supporting educational reforms, he lost the support of the nomads. He also started many expensive construction projects such as the Grand Canal of China, and became embroiled in several costly wars. Between these policies, invasions into China from Turkic nomads, and his growing life of decadent luxury at the expense of the peasantry, he lost public support and was eventually assassinated by his own ministers. Both Emperors Yang and Wen sent military expeditions into Vietnam as Annam in northern Vietnam had been incorporated into the Chinese empire over 600 years earlier during the Han dynasty 

Question: Who is the father of Emperor Yang of Sui?
Answer: Emperor Wen of Sui.
Gao Zu.
Naluoyan.
Yang Jian(8).
Yeung Kin.
Yang Jian.
Wen Di.