#2
For many years now, the lab workers at the Wuhan Laboratory have been taking the experimental animals from the lab (the animals who are sick, etc because they are being used for experiments), and they have been selling those animals as food at the wet market to make extra money.
There’s a major lack of oversight at Chinese labs, factories and all over China which is why their products are cheap and basically garbage. So these lab workers are easily able to smuggle the lab animals out and sell them as food.