The Wah Ching (Youth of China) was founded in 1968 mainly by immigrants from Hong Kong and China working at Hop Sing Tong gambling establishments in San Francisco's Chinatown. The gang was first formed as a protection group from the ABCs (American born Chinese) and later evolved into a criminal gang. Beginning in 1969, the Wah Ching fought a war with the Suey Sing Tong for control of Chinatown's gambling, loan-sharking and extortion rackets. After a number of shootings and homicides, the Suey Sing relinquished their territory and reestablished themselves in Oakland. Wah Ching first received widespread media attention because of the 1977 Golden Dragon Massacre (GDM) involving another Chinese gang, the Chung Ching Yee, or Joe Boys (JBS). The event took place at the Golden Dragon Restaurant in San Francisco's Chinatown. Five people were killed, and eleven others were injured. None of the victims were gang members. Five Joe Boys members were convicted of the shooting. The cause of the attack was vandalism by Wah Ching to the graves of several Joe Boy members and a shootout that took place a few months earlier that left one Joe Boy dead and two others wounded. After the shootout occurred, the Wah Ching, though none of them had been killed or even injured in the attack, still killed several Joe Boys in retaliation.