BEIJING -- No matter what economic framework Taiwan wants to join, it must be done on the premise of observing the one-China principle, a mainland spokesperson said Wednesday.

"We oppose Taiwan's participation in any economic and trade arrangement of an official nature or signing of any economic and trade agreement of an official nature," said Ma Xiaoguang, a spokesperson for the Taiwan Affairs Office of the State Council, at a press conference.

Ma made the remarks when commenting on a letter of some US officials that urged the Biden administration to invite Taiwan to join the so-called "Indo-Pacific economic framework."

The US government continues to hype up the concept of "Indo-Pacific" and pursue the so-called "Indo-Pacific strategy," which is, in essence, an attempt to create small, divisive circles to contain China, Ma noted.

Taiwan's Democratic Progressive Party authority's attempt to squeeze into such circles fully exposes its nature of relying on the United States to seek "Taiwan independence" and provoking the mainland, he said.