Will be in HK/Shenzhen next week for a couple days, for the first time. This is a limited budget trip so I was hoping to score some amazing street food around downtown HK and Lowu area of Shenzhen, or find a good bakery for things like pork buns and egg tarts in the morning. What are the best streets for this and are there any local specialties I should not miss? Am currently living in sichuan and am less interested in things I can already get here. Metro accessible is best. Thanks in advance.