China's Taiwan Affairs Office did not respond to a request for comment.
the person said, adding that the calls would connect but Chinese officials wouldn't pick up.
Based on a long-standing practice, faxes continue to be exchanged between two semi-official organisations that handle routine affairs: Taiwan's Straits Exchange Foundation and China's Association for Relations Across the Taiwan Straits.
The council told Reuters that while Chinese officials do not reply directly, they have handled Taiwanese requests when needed or responded through public statements.
China this year labeled Tsai's administration "evil" while Taiwan called China "incredibly absurd".