China warned the Trump administration on Tuesday against reigniting trade tension by restoring tariffs on its goods next month, and threatened to retaliate against nations that strike deals with the United States to cut China out of supply chains.

China expressed opposition to nearby countries striking tariff reduction deals that cut China out of the supply chain. The People’s Daily, in its commentary, called it a “typical act of unilateral bullying, which seriously disrupts the normal international trade order and must be firmly opposed.”

Amid tensions between China and US over tariffs, Beijing lashed out at Washington accusing it of backing Tibetan separatism after Secretary of State Marco Rubio praised the Dalai Lama on his 90th birthday.