It is. And, as a matter of fact, the inoculation of oak trees and truffles is a carefully guarded secret of the INRA (https://www.inrae.fr). There is no natural occurrences of truffles outside the south of France, Italy and Spain.
> Chinese truffles (Tuber indicum), that is, a close relative of the French black truffle (Tuber melanosporum) [...] even ripe Chinese truffles are not wonderful [...] Although it doesn’t have the same powerful aroma or strong flavor, it’s a close approximation.
