All the press and comments assume his ultimate goal is to avoid extradition, which has not been requested so far. I think he know the consequence of his action

All the press and comments assume his ultimate goal is to avoid extradition, which has not been requested so far. I think he know the consequence of his action very well. He wants to expose the government surveillance program and draw public outrage. If US government do request for extradition, this will go through the court system in Hong Kong. Hopefully it will be a fairly transparent system and give him another chance to raise the awareness of this program. He might end up in jail, but this would fulfill his goal, that is to expose the surveillance program to the greatest extend possible.