This changeset was fully reverted because of Sansha City now still controlled by China

https://www.openstreetmap.org/changeset/172528941

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I know that in Vietnam's prospective the South China Sea should be part of Vietnam, and many other countries have such claim such as Philippines, but OSM is a map based on ground and if some countries really controlled some place, we only refer to the reality, so that's why China now don't include taiwan, jinmen, mazu or penghu.

I think you need read more OSM's guideline on its wiki, or if you continue do such edit you may be reported to DWG and had your account banned. 

