Most websites and applications that you're accustomed to are blocked in China by what is referred to as the "Great Firewall" in jest, so sites such as Facebook, Instagram, YouTube, Twitter and most of Google's offerings are all blocked. There, however, exists a workaround to this. You'll have to purchase a VPN, however, note that when purchasing one to make sure that they cover China, as most free options don't. If you're looking for accommodation, there is many a hotel in Kunming to choose from when you're visiting China, like the Grand Park Kunming for example.