BOSTON – When David Zou immigrated from China to Quincy in 1983, he spoke no English. He said back then Quincy had a small Asian population, which meant he had to go to Boston’s Chinatown for most things. “Test prep, haircut, lawyer, groceries – I had to go to Boston,” Zou said. “There was no service for me here.” Now as a fluent English speaker, a founding board member of Quincy Asian Resources Inc., and one of almost 30,000 Asian families in Quincy, he helps other Asian immigrants on the South Shore with translation of documents and English classes. “It’s a very difficult process to get settled down,” Zou said. “I wish there had been an organization then that could help me.”