Do You Suggest Tibet Train Travel to travelers in 2020? Is it safe enough or too crowded to take?

This question on Tibet train travel gets common when the Novel Coronavirus (COVID19) situation gets better in China recently. As of March 15, 2020, there is “0” case of this COVID19 in whole Tibet, and in comparison with traveling in other parts of China, Tibet remains more attractive to Chinese travelers in 2020, however it is sure that it is crowded sometime in the trip, especially when people check in and/or check off the train, so please keep your belonging well and also ware face mask well, and try to wash your hand more frequently than usual. You’d better avoid crowded dinning cabin, and try to get more fresh air.