The United States reaffirmed its commitment Wednesday to a "one China" policy and its opposition to any moves that would change the status quo of the Taiwan Straits.
The statement, by State Department spokesman Richard Boucher, came a day after Sun Weide, the Chinese Embassy spokesman in Washington, called in reporters to complain about U.S. support for Taiwan.
Sun said China is gravely concerned over the recent US moves on the Taiwan issue. China strongly urges the US side to stop selling advanced arms to Taiwan, cut its military links with Taiwan, stop any official exchanges with Taiwan authorities and stop supporting Taiwan's moves to join international organizations where statehood is needed.
He also expressed grave concern and dissatisfaction over the recent moves by some US Government officials and congress members in relation to China's Hong Kong.
State Department spokesman Richard Boucher said the United States was committed to the policy based on three joint communiques the two governments have issued over the years. He also said that the United States was committed to the "Taiwan Relations Act", which permits arms sales to the island.
He said the United States does not support Taiwan independence.
Boucher said both China and Taiwan should refrain from statements or actions that would unilaterally alter Taiwan's status.
He said the United States would continue the sale of appropriate defensive military equipment to Taiwan in accordance with the "Taiwan Relations Act."
On Tuesday, Sun, the embassy spokesman, expressed China's "grave concern" at U.S. policy on Taiwan and called for an end to arms sales to Taiwan. Relations with Washington could become strained, he warned.