Siamen

Taking the port of Siamen (in Fukien) Chen Chen-kung twice advanced on Nanking.

Source: wiktionary

The Dutch then were especially strict on ships from Taiwan to Siamen. Jheng Chenggong refused to commit even one vessel to this route. Consequently, the Dutch East India Company halted its operations in Taiwan and dispatched[…] Charles W. Le Gendre, the US Consul in Siamen, comes to Taiwan

Source: wiktionary

After initial successes , his tactical mistakes forced him to retreat to Kinmen and Siamen in southern Fujian. The following year, Cing forces launched new attacks on Kinmen and Siamen.[…] Jheng Jing abandons Kinmen and Siamen.

Source: wiktionary

Surprisingly, the Delonix Regia is a species of flowering plant from the Fabaceae family, endemic to Madagascar.[…] It is the city tree of Tainan, Taiwan and Siamen, Fujian Province, People’s Republic of China. The National Cheng Kung University in Tainan displays one on its emblem.

Source: wiktionary