Learn Chinese at the university and Japanese in daily life, and as you learn Japanese, learn tips and tricks for converting shinjitai into kyuujitai into simplified hanzi, as well as tips and tricks for converting kango into Middle Chinese into Putonghua. If you can't look at 流星 ryuusei and automatically know that it's something like *liuxing in Putonghua and then you just sort of happen to get the tones right, then that is a skill issue and you can ligma balls