China and Israel secretly began building military ties in the 1980s during the Soviet–Afghan War, which both Israel and China opposed. They both supplied weapons to the Afghan mujahideen (Israel sending captured PLO weapons via the United States and Pakistan), and military cooperation between the two began in order to assist the Islamic resistance against the Soviets. China and Israel subsequently started exchanging visits of delegations of academics, experts, businessmen and industrialists.[22] Reportedly, a large number of the heavy tanks used in China's 1984 National Day parades were retrofitted by Israel from captured Six-Day War equipment.[23]
https://en.wikipedia.org/wiki/China%E2%80%93Israel_relations