Which preposition to use with tsin

to Occurrences 3%

You find them everywhere from Tien-Tsin to the Red Sea.

on Occurrences 2%

Our "treaty, or general convention, of peace, amity, and commerce" with that Empire was concluded at Tien-tsin on the 18th June, 1858, and was ratified by the President, by and with the advice and consent of the Senate, on the 21st December following.

of Occurrences 1%

The treaty of Tien-tsin of the 18th June, 1858, has been faithfully observed by the Chinese authorities.

Which preposition to use with  tsin