Dennis Ng, immigrated from Guangdong Zhongshan, graduate of Huanan gong  xue Yuan, was an engineer in China. He came to New York and couldn't find a job. He opened a groceries store in a black neighborhood, selling newspapers, magazines, drink, candies, chips, rental VHS tapes in English, rental comic books. lotto machines were the most valuable, the busiest spot with a long line extend to out of the door.

Pooh Lee-gao came for summer job, one man management sometimes from 6:00AM to 8:00PM. This 6-foot tall black man Bob came daily buying $20 one dollar tickets with different number, saying to Pooh inputting to lotto computer. Pooh print out tickets. Bob sorted out those tickets that were wrong. Dennis Deducted those tickets costs  from Pooh's salary. pooh didn't win lottery.

Pooh figured his listening English wasn't good, so he wrote down on paper before typing into computer.   Still, Bob complaint against Pooh, making him lose salaries.

Pooh pulled out paper and pens, asking Bob write down those 20 numbers of six doubled digits combination. No more errors since.