China was friendly with the USSR only briefly, like in the 1950s. It was desperately poor at the time, and received a lot of aid from the USSR. I don't know wh

China was friendly with the USSR only briefly, like in the 1950s. It was desperately poor at the time, and received a lot of aid from the USSR. I don't know what other friendlies you mean. USSR installed communist/socialist governments in the countries it liberated from German occupation after WW2, but those relationships were... complicated.