[6] His services were often called for in arbitration proceedings between the Hai San and Ghee Hin societies involved in the Larut Wars.

[7] Foo Tye Sin was one of three Chinese considered respectable enough to sit on the commission of inquiry into the 1867 Penang riots.

Governor Anson at the height of the Larut war, even though he was, according to CS Wong, "...overtly and independent, but covertly a Hai San sympathiser.

"[5][8][9] Foo Tye Sin and Ong Boon Teik were creditors of Ngah Ibrahim the Mantri of Larut.

[10] Foo Tye Sin and Koh Seang Tat, a descendant of Koh Lay Huan, the first Kapitan China of Penang,[5] were business partners in the firm of Tye Sin Tat & Co., ships' chandlers, which was located at Beach Street.