Securing a laptop for travel to China
The police state that is China doesnt care about summit attendees, it cares about social harmony. Summit attendees should have a passport and a visa if needed. Otherwise they should act in a harmonius manner. If they can do that, then they will be disappointed to find out that the officials simply dont care about them. No one is going to ask friendly, personal questions in customs; no one is going to ask for an inventory of what is being carried in; no one is going to ask how much money you have with you; no one is interested in seeing and opening your electonics; no one is going to pay the least attention to your baggage. 
Relax, have a good time, and prep a vpn if you are set on working. Then, on the way back, contrast the experience to the police state that you are from.