What do you mean, both directions?

Two-way travel refers to two people working together for the development of one thing. This sentence is often used to describe the feelings of two people, which means that this relationship is more precious or sincere only if both sides really pay instead of unrequited love.

"Go" comes from "The Biography of Yan Dou in the Later Han Dynasty": "If you go with the teacher and abandon the official, the five houses will not merge." The Book of the Later Han Dynasty is a biographical history book that records the history of the Eastern Han Dynasty. It was compiled by Ye Fan, a historian in the Southern Dynasties and the Song Dynasty. It is also called "the first four histories" with Historical Records, Hanshu and The History of the Three Kingdoms.