Taiwan question is China's internal affairs and the reunification of the motherland will absolutely be achieved, said State Councilor and Defense Minister General Wei Fenghe at the Shangri-La Dialogue in Singapore on Sunday.

"Taiwan separatist" will definitely come to no good end and foreign inference will categorically fail, he said in a keynote speech themed China's Vision for Regional Order at the international security forum.

"Peaceful reunification is the biggest aspiration of Chinese people and we're willing to put our best effort for that", said Wei.