Vietnam's anti-China protests have turned into turmoil since Tuesday. Companies and investment projects from the Chinese mainland, Taiwan and other Asian countries and regions have been affected. It was reported that Taiwan investors suffered the greatest loss.

This is the most serious riot since Vietnam reunited, and the most stunning attack and looting foreign businesses in East Asia in recent years. Street politics in some Asian countries in recent years have caused havoc for social order and business, but few were like that in Vietnam, which deliberately targeted industrial parks and factories. Workers even ransacked their own factories.

Authorities from the Chinese mainland and Taiwan as well as other countries and regions such as Singapore have lodged stern protests with the Vietnamese government. Some international media, shocked by the chaos, called Vietnam an anarchy-dominated country of burning nationalism.

The turmoil is the outcome of Hanoi's years of anti-China propaganda. Without legitimate grounds and practical capability, Vietnam fabricates and hypes up its jurisdiction over the Xisha and Nansha Islands. This uncompromising stance, in an attempt to bring its people together, has actually cornered itself.

The rising turmoil in Vietnam has jeopardized the interests of foreign investors. Vietnam is probably no longer a rich land for investment and business, but a pariah in the eyes of these investors, especially East Asian investors. Vietnam is making a fool of itself, showing how uncertain its market is.

Vietnam has to offer compensation for the losses incurred to foreign investors, who will not allow Hanoi to duck its responsibilities. Otherwise Vietnam will pay an additional political price.

When large scale anti-Japan demonstrations broke out in China, wherever vandalism took place there was much less damage caused by the Chinese protestors, and public opinion urged prompt reflection.

The Chinese government and mainstream society were clear in their attitude against violence in demonstrations and the vandals were pursued according to the law.

But violent demonstrators in Vietnam, starting Tuesday, were obviously indulged by Hanoi. The situation was still out of control a day later. There was no collective condemnation of the violence by local media.

Arrogance makes Hanoi misjudge the situation in the Asia-Pacific. The geopolitics of the South China Sea will not be easily changed by its harassment.

 It's time that Hanoi sober up, or those looters will finally make the whole country suffer. Hanoi's over-tolerance must not test China's patience beyond the limit.