You can only send USD 50,000 a year out of Korea.
That ceiling applies to remittances whose source of funds you have not separately documented. A foreign resident who can document how the money was acquired — salary, declared income — may remit the documented amount. Organise the proof and the "limit" largely stops applying to you.
Someone in China can only receive USD 50,000 a year from abroad.
That figure is an annual facilitation quota for an individual in China settling foreign currency into renminbi or buying foreign currency — a quota on conversion, not a ceiling on what may arrive. SAFE’s own position is that a genuine current-account transaction can be processed above it against documents, and that reading it as a personal annual maximum is wrong.
My annual remittance allowance out of Korea is USD 100,000 now.
Not if you are a foreign resident. Korea did raise the undocumented annual figure to USD 100,000, but it applies to resident Korean nationals; foreign residents and non-residents sending through licensed small-amount remitters keep USD 5,000 per transaction and USD 50,000 per year. The route that actually lifts your ceiling is documenting how the money was acquired, not the headline change.