Down an alley near the Drum Tower, a yellow flag heralds the "wonton king", priming diners for the dumpling feast to come. Having retired in 2016, the owner learnt to make wonton from scratch, before opening this shop. The filling is made in-house with freshly slaughtered (not frozen) pork; ultra fresh vegetables and a sprinkle of black sesame seeds impart extra aromas; dried shrimps add umami depth to the broth. The potstickers are tasty, too.