I remember another poster saying they did not completely leave. They still had offices in China that focused on Adwords and other businesses in China, just not

I remember another poster saying they did not completely leave. They still had offices in China that focused on Adwords and other businesses in China, just not search. Google announced they were leaving not because of censorship, but due to Gmail hacking. What I wonder is if China has a similar law like the US that let's them issue "National Security Letters" with secret gag orders. If they did, then they shouldn't have needed to hack Gmail in the first place.