Guys, I think you mixed up the files and put the Chinese file with gun in the Soviet TT, and the Soviet file with gun in the new Chinese premium. And now you’re trying to convince us that this is how it was meant to be.
That said, the USSR did help the Chinese throughout their war with Japan, well at least until 1941 when Germany started Barbarossa. So maybe that’s where their thinking lies. I can’t find much evidence of the USSR using Chinese weapons though, so I dunno.