并行不悖

Explanation: Paradox: contrary to, conflict. The same time, not in conflict. 　　Usage: Contraction type; as the predicate attribute; for the property 　　Source: Han Dai Holy "Book of Doctrine of the Mean": "all things together without harm, but not contrary to the parallel road." 　　Examples: The development of thermal power and hydropower, which is ~. Thesaurus:  stay, paint a picture with two brushes at the same time, Advance side by side