Speaking at the Association of Southeast Asian Nations (Asean) Foreign Ministers meeting in Cambodia, he said China had made the utmost diplomatic effort to avert a crisis, but that it would never allow its core interests to be hurt.
But others at the same meeting urged restraint.
"There is no justification to use a visit as pretext for aggressive military activity in the Taiwan Strait. It is normal and routine for legislators from our countries to travel internationally," said EU foreign policy chief Josep Borrell.
"We hope de-escalation happens... and normalcy returns to the Taiwan Strait," Kung Phoak, Cambodia's deputy foreign minister told reporters.