Last time I visited there were two guys with jackhammers taking up half of the concrete stairway to a McDonald&#x27;s while it was still packed and busy: no safety equipment or barriers.  I lived in Hong Kong for a couple of years.  Shenzhen is great, but the air pollution is a holdup for anyone looking to relocate there (or Hong Kong).  Otherwise it&#x27;s a maker&#x27;s paradise.