The Wah Ching has been in a long conflict with the Asian Boyz. One of the first shootouts between the two gangs occurred in the 1990s. The shooting occurred in El Monte at a pool hall. An Asian Boyz gang member, Lea Mek, was killed by Wah Ching gang member Chieu Luong Yang. Another shootout between the two gangs occurred in San Marino that led to the deaths of two youths at a San Marino High School graduation party in June. After an investigation by the authorities, police claimed that when the Asian Boyz gang members arrived at the party, they noticed that Wah Ching gang members were there, prompting them to leave and return with weapons. At least nine gang members were arrested, and police seized five weapons from homes searched in conjunction with the arrests. The shootouts between the two gangs were called "Summer Madness" by the Asian Boyz gang, and resulted in at least 42 deaths on both sides.