Question: The 2004 movie The Twins Effect II is notable for the first joint appearance on screen by Jackie Chan and his son. What's the son's name?

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Project A Part II: Project A Part II (; aka Jackie Chan’s Project A II) is a 1987 Hong Kong action film written and directed by Jackie Chan, who also starred in the lead role.  It is the sequel to the 1983 film "Project A".  Jackie Chan plays "Sergeant Dragon Ma" once again, Sammo Hung and Yuen Biao, stars from the original film, are absent.  The film was released in the Hong Kong on 19 August 1987.

New Fist of Fury: New Fist of Fury is a 1976 Hong Kong martial arts film directed by Lo Wei and starring Jackie Chan.  It is the first of several films that Lo directed Chan in, and the first using Chan's stage name Sing Lung (literally meaning "becoming a dragon", by which Chan is still known today in Asia).  The film gave Chan his first starring role in a widely released film (his first starring role was in the "Little Tiger of Canton" which only had a limited release in 1973).  The film was a sequel to Bruce Lee's "Fist of Fury", one of Lo Wei's biggest successes.  "New Fist of Fury" was part of Lo's attempt to market Jackie Chan as the new Bruce Lee and did not contain any of the comedy elements that were to be Chan's career trademark later on.

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

Jaycee Chan: Joming Jaycee Chan (born 3 December 1982), better known as Jaycee Chan, is an American-born Hong Kong actor and singer.  In 2004, he released his first Mandarin CD album in Hong Kong.  He was based in Taiwan to continue his music career.  He is the son of the Hong Kong martial artist and actor, Jackie Chan and his wife, Joan Lin.  He sings and performs in Mandarin and Cantonese.  He is currently on a hiatus from the entertainment industry after he was arrested and jailed for providing his apartment in Beijing for acquaintances to smoke marijuana in but he stated that he has a plan to make a comeback and to even direct a film.

Laura Weissbecker: Laura Weissbecker (born October 3, 1984) is an international multilingual French actress who won the Chinese Huading award for "best new actress" in 2013 for her role in Jackie Chan's "CZ12".  She has worked in France, Germany, USA and China, with directors such as Jackie Chan, Cedric Klapisch, Elie Chouraqui, Mark Romanek and Tonie Marshall.  Weissbecker was handpicked by Jackie Chan for one of the leading roles in the film "Chinese Zodiac 12", starring and directed by Jackie Chan.  The film was a huge commercial success in Asia, in particular in mainland China where it is listed as amongst the top 5 biggest box-office hits for a Chinese movie in the country's history.

Jackie Chan Hill: Jackie Chan Hill or Jackie Chan Village (Indonesian: "Kampung Jackie Chan"; formally: "The Friendship Village of Indonesia-China") is a neighbourhood in Banda Aceh, Indonesia.  It is named for Chinese actor Jackie Chan who, with other Hong Kong actors, helped fund the building of the community and purchase of the hill.  Jackie Chan also campaigned with the Hong Kong Red Cross to raise additional relief funds that went to reconstruction of the site.  Officially, the government does not allow villages to be named after individuals, hence the official name not bearing "Jackie Chan".  The neighbourhood is built up on a hill, high enough to avoid being inundated by a tsunami, thus being safe from tsunamis.  The village is a green field construction, where only treed hills and farmers' fields once stood.  It is located 25 minutes, some 17 km, outside of central Banda Aceh.  The village is 1.5 km inland and elevated 300m.  The village has a clinic and kindergarten and a covered village square for a market.  However the market has not worked out.  There are 606 mostly single family homes in the village.  The village was built by a Chinese contractor.  The quality of the build is reasonable, unlike some other similar reconstruction efforts in Aceh.  There is no local high school, and the public transport system is insufficient to needs, as most jobs are located far from the village.  The village opened in 2007 with 2400 residents from a variety of villages and a variety of ethnic groups.  They have lived harmoniously and built a community together.  As of 2014, the community's kindergarten is currently unused.  Some 1200 people remain, others having moved away to be closer to work or services.  Those that still hold title to their homes have rented them out to others.

I Am Jackie Chan: I Am Jackie Chan: My Life in Action is a 1998 autobiography written by Jackie Chan with help from Jeff Yang, written before Chan's success "Rush Hour"–a special edition of the book was released in 1999 telling events occurring after Chan's success with the movie.  The book tells of Chan's life story from when he was born to several months after "Rush Hour" was made.  The last few pages of the book contain a Top 10 list of Chan's favorite stunts and fights and an almost complete filmography of him.  The book was dedicated to his parents.

Maggie Lau: Maggie Lau () is a Hong Kong actress and singer.  She starred in "New Police Story", "The Twins Effect" and also had a small acting part in "The Myth" alongside Jackie Chan and Korean actress, Kim Hee-sun.

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.

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.

Supporting paragraphs: The Twins Effect II Jaycee Chan
Answer: Jaycee Chan