Liu was commenting on US President-elect Donald Trump's threat to add additional 10% tariff on all goods from China.
Earlier in the day, Trump promised to add 10% to export duties on goods from China until the problem of drug trafficking from the country is resolved.
"About the issue of US tariffs on China, China believes that China-Us economic and trade cooperation is mutually beneficial in nature. No one will win a trade war or a tariff war," Liu said.
Trump has previously repeatedly criticized China's economic policies and threatened to impose new tariffs on goods from China.