You don’t need to shout ‘open sesame’ to enter this treasure trove on Longchang Lu that’s overflowing with memorabilia, old renminbi, comic strips, old coins, ceramics, musical instruments and more. It’s open every Wednesday, Saturday and Sunday from 6am to midday and most of the customers are senior (well-versed) locals, so be prepared to battle it out with the pros if you want to nab the best finds.