"We firmly oppose relevant content of the bill on US defense budget … We express deep resentment over the signing of the act," Hua said in a statement late Sunday.
China calls on the United States to stop interacting with Taiwan in the military area in order to avoid damaging US-China relations, Hua added.
After Chinese Nationalist forces were defeated by Mao Zedong’s Communists, the Nationalist government moved to Taiwan in 1949. Since then, Beijing has viewed the self-ruled, democratic island as a breakaway province. The United States, along with many other countries, does not recognize Taiwan as a sovereign nation and sticks officially to the "One China" position, but has kept informal relations with the island after severing diplomatic ties with it in 1979.