Yunzhou and Huangzhou are both in the south, and for this business trip to Liangzhou City, there's no coming back in less than ten days to half a month.
Moreover, when the Criminal Investigation Team goes on a trip, it's rare for them to take flights.
Most of the time, the type of transportation used within the system isn't decided based on the urgency of the work, but based on the rank of the personnel traveling.
For someone like Cheng Zihao from the Criminal Investigation Team, the highest rank they can sit on a train is hard sleeper; soft sleeper is not allowed.
Actually, speaking economically, sometimes the airfare is cheaper than the train's sleeper tickets.
But it doesn't matter now, the dismemberment case is a three-year-old unsolved case, so the urgency of the investigation isn't about one or two days.
The two groups went straight home to pack up some luggage and things, and set off today.
