Once again, Tesla only has one factory in China. Giga Shanghai was shutdown for all of April. When you shutdown a factory like this your production and deliveries are going to collapse. This must be difficult for you to understand.
And I don't know what BYD has to do with Tesla being forced to shutdown its ONE factory in China.
Tesla is the globally dominant EV company and its not even close. There are now 2 factories open in the US, one in China, and one in Germany. There is no competition for Tesla.