query: How old was Cho Namchul when he died?
passage: Cho Nam-chul
Cho Namchul (November 30, 1923 - July 2, 2006, alternately Cho Namcheol) was a professional Go player (Baduk in Korean). He died of natural causes in Seoul at the age of 83.
passage: Raymond &quot;Shrimp Boy&quot; Chow
In 1990 and 1991, the Wah Ching and Wo Hop To were struggling for power in San Francisco. Wah Ching member Danny Phat Vong was killed in April 1990 outside the Cats nightclub on Geary, and in retaliation, the Wah Ching killed Wo Hop To member Michael Bit Chen Wu outside The Purple Onion, a nightclub in North Beach, in May 1990. Wah Ching leader Danny Wong called for a cease-fire at the Harbor Village, and was toasted by Chong. The toast for peace was later repeated at Chow's wedding, who called Chong "Uncle to us all." Despite the apparent cease-fire, the violence culminated in the assassination of Wong in April 1991. According to court records, Chow was in charge of day-to-day operations and new member recruitment, leading them through a series of 36 loyalty oaths, promising death if any was broken.