CNN — When a tourist at a Tibetan hotel noticed a foul smell in his room and asked to move, little could he have guessed he would get caught up in a murder investigation. The traveler spent half a day in the room wondering where the smell was coming from and initially suspected either the bakery downstairs or perhaps his own feet. But he was later informed it came from a dead body under the bed. The tourist – identified only as Mr Zhang – had checked into the hotel, said to be popular among internet influencers, in Lhasa on...