The war in San Fierro began when the Da Nang Boys attempted to move into the city, trying to force the local Blood Feather Triad group out of the Chinatown district. The Mountain Cloud Boys, led by Wu Zi Mu, begins to extract revenge by employing Carl Johnson to hinder their operations in the city. This first includes picking up a package from Easter Bay Airport whilst avoiding a Da Nang Boys ambush. Carl then acts as a decoy, driving south into Whetstone, to allow Red Gecko Tong leader Ran Fa Li to escape Wu Zi Mu's apartment, as the Da Nang Boys had planned to murder Ran Fa Li when he left the apartment.