Chinese Vice Premier Liu He, a member of the Political Bureau of the Communist Party of China Central Committee and chief of the Chinese side of the China-U.S. comprehensive economic dialogue, held a phone conversation at request with U.S. Trade Representative Robert Lighthizer and Treasury Secretary Steven Mnuchin late Tuesday.

In the phone talks, China lodged solemn representations concerning U.S. additional tariffs on the Chinese imports starting on Sept. 1.

The two sides agreed to hold another phone conversation in two weeks.

Chinese Commerce Minister Zhong Shan, Governor of the People's Bank of China Yi Gang, and Vice Chairman of the National Development and Reform Commission Ning Jizhe also joined the talks.