[HIGHLIGHTS] In the era of high-speed rail, why do green cars still need to be supported?

In the era of high-speed rail, why do green cars still need to be supported? Zhang Tiankan: The extreme weather comparable to that of the 2008 Spring Festival forced the suspension ofhigh-speed trains. Green cars that still use internal combustion engines as power mainly use diesel to generate electricity, Zhang says.

Zhang: While developing new technologies, old technologies and related equipment cannot be completely abandoned immediately.  Like today's digital payments, banknotes still play an important role in the financial system.