That whole China theory might collapse soon. There is an article in the big Spanish newspaper El Mundo today saying that the utilities company responsible for supplying Barcelona with water and removing the city's waste waters, keeps samples of waste water dating back years. They tested those samples and found the virus in a sample from as early as March 12, 2019
https://www.elmundo.es/ciencia-y-sal...c2c8b45b9.html