Question: WHat star of The Twins Effect used the first name "Dior" early in his career?

Context paragraphs:
The Twins Effect: The Twins Effect, also known as Vampire Effect in the United States, is a 2003 Hong Kong film directed by Dante Lam and Donnie Yen.  The film was derived from Cantopop group Twins, starring both members Charlene Choi and Gillian Chung in the leading roles.  Co-stars include Edison Chen and Ekin Cheng.  Jackie Chan makes a

Verity: Verity ("alias" Veretie, Verety, Verita, Veritie, etc.) is a female first name and a surname.  As a first name it derives from the Latin feminine noun "veritas", meaning "truth".  It is thus an equivalent of Alethea, a female first name first used in England "circa" 1585, derived from the ancient and modern Greek feminine noun "αλήθεια" (pronounced "al-ee-thia"), meaning "truth".  It was adopted in England as a Puritan virtue name, truthfulness being considered as a desirable attribute especially in a female.  Verity was one of the most popular first names given to girls in Australia.  It is especially associated with parts of Yorkshire and Northern England.  Verity is also a surname, which may have more ancient unrelated origins, possibly being a corruption of a similar word.  Notable people with the name include:

Coilgun: A Coilgun or Gauss rifle is a type of projectile accelerator consisting of one or more coils used as electromagnets in the configuration of a linear motor that accelerate a ferromagnetic or conducting projectile to high velocity.  In almost all coilgun configurations, the coils and the gun barrel are arranged on a common axis.  It is not a rifle as the barrel is not rifled.  The name "Gauss" is in reference to Carl Friedrich Gauss, who formulated mathematical descriptions of the magnetic effect used by magnetic accelerator cannons.

Jonas (name): Jonas is a common male name in many Western world countries.  It is primarily used as a first name, but also occurs as a surname.  It is particularly rare in Israel, Germany, and, the Netherlands.  It is also the most common name in Lithuania, however, in Lithuania, the name Jonas is derived from the Hebrew Yohanan as opposed to Jonah.  Its widespread use and popularity has roots in its Jewish and Christian origins.  As a surname, it is often Jewish, whilst as a first name it is mostly used in countries where Christianity is the main religion.  In Turkish, Arabic and the Muslim world the equivalent name is Yunus (یونس) or Younes.  In North America the name found popularity among Métis and Aboriginals in the Northwest.

Sylvia (singer): Sylvia Jane Hutton (née Kirby, born December 9, 1956), known simply by her first name Sylvia during the 1980s, is an American country music and country pop singer and songwriter.  Some original source books have her birth name as Sylvia Kirby Allen; however, Allen was her first husband's last name.  She consequently used only her first name.  There was also a point in time that she used Sylvia Rutledge.  She is currently using her married name and is promoted as Sylvia Hutton.

Stars (shader effect): Stars is a computer graphics effect used by computer games.  The effect takes the bright parts of a rendered image of the scene, and then smears them outward in a number of directions.  The result is that bright areas have streaks emanating from them.  Stars can be used to enhance blooming.  The effect is also sometimes known as "light streaks" or just as the "star effect".

Mark Strange: Mark William Strange (born 8 October 1973) is an English actor, film producer and martial arts action performer.  Strange has worked on a number of feature films including "The Medallion" and "The Twins Effect" along with Jackie Chan and "Batman Begins" to name but a few.  He has also produced and co-produced feature films, including "Displaced", "Underground", and "Bodyguard: A New Beginning" released in the US by Lionsgate.

Ekin Cheng: Ekin Cheng (born 4 October 1967) is a Hong Kong actor and singer.  Early in his career, he used the name Dior as a first name (because that was what it sounded like when his younger sister tried to call him 二哥 in Cantonese).  He has also been referred to as Noodle Cheng, (鄭伊麵) after a popular noodle product with a similar name and his wavy long hair.  Currently Ekin is the name used.

Agrocarbon: Agrocarbon is the international brand name of biochar products produced by 3Ragrocabon.  3Ragrocarbon is owned and operated by Terra Humanities LTD, a Swedish ecological-innovation technology and engineering company.  3RAgrocarbon utilizes patented 3R zero-emission Pyrolysis to create environmentally friendly bio-char and soil-nutrient enrichment products.  The firm is headquartered in Hungary where its main production facility is located.  The company is supported by, and partnered with the European Union on several projects focused on eco-safe agricultural and soil nutrient initiatives.  The Agrocarbon is applied in all formulations, from stand alone biofertilizer to any combination as compost or soil activator.  The refined and formulated Agrocarbon products are multi effect used for sustainable soil and carbon negative environmental and climate protection improvements.  This includes economical food crop production and forest nursery, biological pest control, natural fertilization, soil moisture retention, restoration of soil biodiversity and natural balance.

The Twins Effect II: The Twins Effect II is a 2004 Hong Kong action fantasy film directed by Corey Yuen and Patrick Leung.  The film is a sequel to "The Twins Effect" (2003), but has a completely different story from the first film.  It starred Charlene Choi and Gillian Chung of Cantopop duo Twins in the leading roles.  Co-stars include Donnie Yen, Daniel Wu, Edison Chen, Wilson Chen, Tony Leung Ka-fai, Qu Ying, Fan Bingbing and Jim Chim.  Jackie Chan also makes a cameo appearance, along with his son Jaycee Chan who is in his debut.  The film's original English working title was Huadu Chronicles: Blade of Rose and its US DVD release title is Blade of Kings.

Supporting paragraphs: The Twins Effect Ekin Cheng
Answer: Ekin Cheng