Playing badminton is considered a relatively simple and popular sport in modern urban areas.
If you're just casually playing, two rackets and a shuttlecock can suffice, and you can play anywhere there's open space. But to reach a level where your shoulder joints suffer wear and tear, and your wrist joints also wear out and develop hyperplasia, a standard badminton court is a must.
Moreover, unlike basketball courts, which are often outdoors, badminton courts need to be wind-free, so they're mostly located indoors. This often means there are reservations and fees involved, requiring one to leave a phone number and name. And, of course, the most important thing is the badminton partner.
Someone needs to play with you for you to reach the point of bone hyperplasia. Such a long-term training partner missing is highly likely to be reported to the police.
Jiang Yuan waited for less than half a day before a file of someone suspected to be a victim was sent over.