Brave And The Bold #137 October, 1977.

Batman walks the night streets of Chinatown to meet his friend Danny Loo, when his attuned reactions save a Chinese man who comes crashing through a window. Batman leaps into action, and on the other side of the window he confronts the Savage Dragons. He fends off the gang of young thugs until he is struck with a bottle on the back of the head. Fortunately, Danny bursts in behind the GCPD causing the teen punks to scatter. Danny confides in Batman that he's concerned the Dragons, led by Willie Chang, will disrupt the Chinese New Year celebrations.