China’s ambassador to Thailand has expressed displeasure with the Thai use of the term “grey Chinese” to describe Chinese nationals involved in criminal activities within the country. Ambassador Zhang Jianwei conveyed that the term creates an image of unfriendliness towards Chinese tourists. The ambassador’s concerns were not communicated directly to Thai officials, but through other channels. This incident raises questions about the extent to which Thailand should accommodate China’s sensitivities regarding its citizens’ activities abroad. The situation highlights a potential diplomatic friction point between the two nations. The use of the term reflects growing Thai concerns about rising crime linked to Chinese individuals, particularly in tourist areas. This issue underscores the complexities of balancing diplomatic relations with national security and public safety.