At home, if I had $1.00 in my wallet I was lucky, I hardly every carried cash, I would use my debit card for everything. In China, cash is King. Cards are rarely used, if accepted, some merchants will sometimes add the 3% fee to use a card to your bill. Your metro pass is starting to be able to be used in taxis, trains, buses, and boats, but I have heard someone who tried to use in a taxi and was told no, I haven’t tried yet. The challenge using an ATM all the time, is it only gives you 100RMB notes, give a taxi drive 100RMB for a 12RMB fare and they get mad. I try to hoard my small bills for taxi and break my larger ones, however try to break a 100RMB at McDonald’s and they have to go to the back of the restaurant to make change.. all the while your food is getting cold, I don’t understand.. 100s are so common, McDonald’s can’t break them? The bills are also larger sized than what I am use to and don’t fit into a wallet. That is Chairman Mao on the bill, he is on all the bills. There are also 1yuan coins which add up quickly and weigh you down.