Foreign ministers from four Southeast Asian countries are visiting China this week. The first of the meetings took place Wednesday between Chinese Foreign Minister Wang Yi and his Singaporean counterpart Vivian Balakrishnan in Nanping City, Fujian Province. CGTN's reporter Cui Huiao said the meeting came as the two sides marked the 30th anniversary of the establishment of diplomatic relations. Wang Yi said China supports ASEAN to uphold the principle of non-interference in internal affairs.