Analysis of information sources in references of the Wikipedia article "Mitsubishi A6M Zero" in English language version.
Without radios, they could not communicate with one another... Maj. Cheng Hsiao-Yu led the entire 22nd PS into battle... nine I-15bis from the 28th PS led by Maj. Louie Yim-Qun engaged the Zeros over Chungking... Japanese Zeroes with their high speed, amazing climbing ability, agility and firepower, totally dominated the fight. After half an hour's battle most of the surviving Chinese planes were low on fuel... this battle was debut of the Zero fighter and the Chinese Air Force suffered its worst defeat... Maj. Louie Yim-Qun was one of the injured in the fight... landed his badly shot up I-15bis at Suining and counted 48 bullet holes on it. At least two pilots from 21st PS were killed... one more aircraft was hit, making a forced landing, the wounded pilot suffering a leg shot off, and later dying from loss of blood... of the pilots that survived... Hsu Hwa-Jiang who later in the war continued to fly with the CACW.