Considered the world's largest annual human migration, China's Spring Festival travel rush, or "Chunyun" in Chinese, kicked off 14 days ahead of this year's Spring Festival, which falls on February 12. Besides discouraging "non-essential" trips amid the pandemic, CGTN Reporter Zang Shijie came to Beijing West Railway Station to find out what measures train operators are taking for a COVID-free journey and what passengers should keep in mind.