What kind of wood should be used to make guqin?

Paulownia and Cunninghamia lanceolata are common, while old Cunninghamia lanceolata (hundreds of years old), China wood (beams and coffins of ancient old houses) and Daphne, etc. , are rare and hard to find. Of course, wood is on the one hand, mainly depends on the pianist. Even if a good player uses ordinary wood, it is better than ordinary players using good materials.