The average IQ of Chinese immigrants is 106, the same as the average IQ of Chinese in general. Additional support is that while scientists and quantitative analysts are a top held job for Chinese-Americans, cooks and restaraunt workers are also a top held job. There are only 500,000 Chinese born in China in the US, or 1/7 of the total Chinese-American population.
The average IQ of Indian immigrants is 112, 3 standard deviations above the IQ of Indians in general. This is supported by this thread, which shows how "smart" these "Indians" (purebred white Americans who have funny names) are. There are 710,000 Indians born in India in the US, or 1/4th the total purebred white Americans with funny names population.
I go to school in Los Angeles, and we have a joke among the other Chinese students: a girl failed her Gaokao exams, and was crying. Her boyfriend asks, what's wrong? She replies, "I just failed my college entrance exam, I'll never get to go to college with you! You're too smart!" Her boyfriend says, "I knew you would fail, so I just left half my test blank. We can go to college together!"
3 months later: her boyfriend indeed only got into a 3rd tier university, but the girl's parents paid 1 million RMB and sent her to the US.