Bodyguards and Assassins

Bodyguards and Assassins is a 2009 Hong Kong historical action film directed by Teddy Chan, featuring an allstar cast, including Donnie Yen, Wang Xueqi, Tony Leung Kafai, Nicholas Tse, Hu Jun, Eric Tsang, Simon Yam, Fan Bingbing, Zhou Yun and Leon Lai.

Most of the characters are fictional however, some, including Sun Wen, Chen Shaobai and Yeung Kuwan, are based on real historical figures.

Source: Wikipedia