Because you’ll be paid in RMB, you’ll want to buy plane or train tickets in that currency. The top online provider for travel in China is Ctrip.com. They offer an English version of their site also. It’s also very common for local to purchase the tickets for you and you pay them the cash directly because the buying ticket curve can be a bit frustrating. In addition, one of the easiest methods is to go to the airport or train station and speak with someone at the English speaking counter. Just be sure to be your passport and enough money. They’ll accept local debit/credit cards as well as international cards i.e. Visa or MasterCard.