Zhengzhou station is the largest special grade passenger transit station in the country.
比喻某些机关干部接到文件懒于处理、怕负责任而把它转给其它有关单位unit that does not want to handle documents or instructions but passes them on to another unit to deal with
对上级的指示、文件，满足于当“中转站”照本宣科。
As for instructions and documents from superiors, one is satisfied with being little more than a "transit station" and doing things rigidly by the book.