Third, the ruling of the ad hoc tribunal is full of obvious mistakes, Wang said. It blatantly uses its self-invented rules to negate and deprive the lawful and legitimate territorial sovereignty, maritime rights and interests of parties concerned. In particular, it says that Taiping Dao, the largest island in the Nansha Islands with an area of 500,000 square meters, is a rock and has no relevant maritime rights.

If such a judgment can legally stand, the sea map of the world will need to be redrawn, Wang said.

Wang stressed that this ruling runs counter to the spirit of international rule of law as well as the principle and spirit of the UNCLOS.

"This arbitration is imbued with question marks and fallacies in terms of procedure, legal application, fact finding and evidence gathering," he said.

The so-called ruling is illegal in three aspects: the initiation of the arbitration is illegal, the set-up of the tribunal is illegal, and the result of the arbitration is illegal. Therefore, China's stance is fully legitimate which serves the purpose of upholding international equity and justice and regional peace and stability, Wang said.

The Chinese foreign minister said more and more countries have come to see the nature and danger of the arbitration case, and understand and acknowledge China's stance to resolve disputes through direct negotiation and consultation, calling for respect to the rights of sovereign states to independently choose dispute settlement means including respecting the declaration on optional exceptions made under Article 298 of the UNCLOS.

There are also more and more legal experts around the world questioning the legality of the arbitration case and the fairness of the ruling, Wang said, noting that the illegal nature of the so-called South China Sea arbitration case and the political manipulation hidden behind the ad hoc arbitral tribunal will be further revealed.