China opposes Vietnam's exploring oil and gas in China's jurisdictional area of the South China Sea, Foreign Ministry Spokeswoman Jiang Yu said Saturday.

"China's stance on the South China Sea is clear and consistent. We oppose the oil and gas operations conducted by Vietnam, which have undermined China's interests and jurisdictional rights in the South China Sea and violated the consensus both countries have reached on the issue," Jiang said in a statement.

Jiang made the remarks responding to a recent report saying that Hanoi claimed Chinese marine surveillance vessels interfered with Vietnam's oil and gas exploration in the South China Sea and accused Beijing of violating its sovereignty.

"What relevant Chinese departments did was completely normal marine law-enforcement and surveillance activities in China's jurisdictional sea area," Jiang said.

"China has been committed to safeguarding the peace and stability in the South China Sea. We are willing to work together with relevant parties to seek a solution to related disputes and implement the Declaration on the Conduct of Parties in the South China Sea," Jiang said.