You say it is yours, so it is yours? very arrogant, you are. you say occupation with force is illegal, but you occupy the island with force, are they illegal? you are lame.
BTW, what's the key Item?
The key Item is that Islands belong to Viets from long time. We didn't have troubles with China. China occupation with force from 1956, 1974 in Vietnam war. China illegally control it. China can not swallow Islands of Vietnam.
China is big thief. Thief can not understand rule of humankind in modern time.