Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
In the 3rd century CE, after defeating Tun Sun to control the trans-Kra Isthmus trade route and encircle Chin Lin, king Fan Man of Funan attempted to seize Chin Lin, but failed due to his illness.
Location
The location of Chin Lin remains unclear. It was first mentioned around 9 – 22 CE during the late Western Han period, a Chinese emperor Wang Mang sent an embassy to visit Chin-lin. Later in the 3rd century, Chin Lin was again mentioned in the account of Funan king Fan Shih-man's conquests in the Chinese text Liáng Shū, which states that Chin Lin was located 3,000 li north of the kingdoms of Ta-k'un (Ch'ü-tu-k'un) and Chü-li (Chiu-chih), speculated to be Kou-chih of Kole polis in present-day near Kuantan of Malaysia. Palmer Briggs proposes that Chin-lin and its southern neighbor, Tun Sun, was the Mon countries. The boundary between this two entities was ill-defined, but probably not far above the present-Mergui-Tanintharyi Region.