Hmmm, yes, more than 1000 I should think. Even using conservative statistical numbers of say 1 in 8000 mtfs and 1 in 24,000 ftms on a population of 3 billion (roughly-speaking) one would get approximately a figure of about 187,500 mtfs and about 62,500 ftms were, statistically-speaking, the population 50% each sex.
Yeah, I'd say there "are more than" 1000 transsexuals in China.