And this is an area where the Chinese are having to walk a very careful line and are playing with fire. The reason Japan- for example- is dependent on the U.S is because their military power is limited by treaty with the U.S. in exchange for U.S protection. It was of course an outcome of WW2 where the the Japanese had a certain interest in going to war and bad blood with the Chinese is always there to flair up.
However, the Japanese are properly asserting that Kim is lobbing missiles into their waters and the U.S is not protecting them- which of course infuriates the nationalists in Japan and is also a valid complaint against the U.S. In return, Trump is giving them more weapons, offensive weapons included. China is having its usual fun and games supporting Chubby in the background but it is not a risk-free lunch. The last thing they want to see is more fully armed and more fully free of Washington Japan and some of that is clearly going on already.
Australia is arming itself up to the gills as well. Huge jump in military spending. F-35's, Boeing P-8 Poseidon and very capable attack submarines specifically.
Taiwan is lobbying DC heavily for F-35. They have seen the reports from the Aussie pilots participating in Red Flag and they want it bad.
Vietnam is pursuing greater ties with the US - they have invited the US fleet to Cam Ranh Bay and have purchased US patrol boats. Last year Vietnam and the US fleet conducted joint training exercises.