Shenzhen is the fastest-moving city in China, boosted by Special Economic Zone status, inhabited by a youthful population who have come from all over China to seek their fortunes, and capped with some of the most significant buildings on the face of the earth. Spread along the boundary with Hong Kong, and reaching further North into the mainland, Shenzhen is linked by a well-developed public transport network, which includes frequent buses, trains and an expanding metro system.