Travel agencies and mainland residents should not conduct economic, cultural or other exchanges on their visits to Taiwan, say the guideline of the Cross-Straits Tourism Association (CSTA).

The CSTA has published three guidelines for mainland tourists traveling to Taiwan, which have been posted on the National Tourism Administration's website www.cnta.gov.cn.

Mainland travelers have been warned not to gamble, buy or sell pornography material or narcotics, or indulge in other activities that can hamper mainland-Taiwan ties.