Concerns voiced on warships' Straits passage

Beijing said on Tuesday that it has expressed concern to Washington after two United States warships sailed through the Taiwan Straits.

Foreign Ministry spokeswoman Hua Chunying said at a daily news briefing in Beijing that China had closely followed the warships' passage and monitored the entire process.

Hua said the Taiwan question concerns the sovereignty and territorial integrity of China and is the most important and sensitive issue in the Sino-US relationship.