Why did the train from Wenzhou to Chengdu stop?

Affected by the epidemic, according to official website of the State Railway Administration.

1, the railway department has completed the disease control construction of the double-track tunnel, so some train lines have been adjusted.

2. The railway department temporarily adjusted the train operation plan. Affected by the COVID-19 epidemic, in order to reduce the flow of infected people, some EMU trains were cancelled.