Despite repeated warnings by the Ministry of National Defense to curb their visits to China, retired senior military personnel are continuing to make such trips — and sometimes as part of a group, a top official has said.

The official, who requested anonymity, said a delegation of generals led by retired general and former director of the General Political Warfare Department Hsu Li-nung (許歷農) visited Beijing over the weekend to attend the Huangpu seminar organized by the Beijing government.

Hsu’s “Chung Shang Huangpu Cross-Strait Ties” seminar launched its first activities in Taiwan last year, with Beijing mobilizing the families or descendants of Huangpu military school graduates to come to Taiwan, the official said.