BEIJING (Agencies) - China has warned Indian companies from entering into any deal with Vietnamese firms for exploring oil and gas in disputed parts of the South China Sea. The statement might give a new turn to its relationship with India. We hope foreign countries will not get involved in the dispute, Chinese foreign ministry spokesperson Jiang Yu said ahead of Indian Foreign Minister SM Krishnas upcoming visit to Hanoi this week. For countries outside the region, we hope they will respect and support countries in the region to solve this dispute through bilateral channels, she said while responding to a question concerning ONGC Videshs plans to explore in two offshore oil blocks that Vietnam claims to be its own. China enjoyed indisputable sovereignty over the South China Sea and its islands, Jiang said. This is the first time India is getting involved in the sea dispute between China and Vietnam, which has flared up in recent months. New Delhi expected a sharp Chinese reaction to ONGC Videshs move, sources said. India recently said it supported the 'freedom of navigation in international waters, including in the South China Sea. The statement came after a Chinese vassel asked INS Airavat to leave 'Chinese waters while it was on a goodwill visit to Vietnam. Our consistent position is that we are opposed to any country engaging in oil and gas exploration and development activities in waters under Chinas jurisdiction, Jiang said. Jiang on Thursday said the UN convention of 1982 did not give any country the right to expand their own exclusive economic zone and continental shelf to other countries territories. The convention, she said, did not negate a countrys right formed in history that has been consistently claimed.