1. Unless it's a misnomer, it specialises in Shanghainese food. 'Chinese food' is a very, very, very vague term. Each province (and even some cities) have their own cuisine.
2. It's from Sydney. The chain has faced some discerning customers and lived to continue to Melbourne.
3. It has Shanghainese dumplings AKA Xiao Long Bao/Siu Loong Bau 小籠包! If you have ever had the pleasure of eating an authentic Shanghainese dumpling, you know there's a method to it.