Can the old man put his grandson's house when he dies?

Under certain circumstances, the old man can be placed in his grandson's room when he dies. Generally speaking, according to the traditional funeral custom in China, the old man should be placed in his son's house when he dies, because the son is the elder, followed by the eldest son and grandson. However, as a last resort, if the son is unable to bury the old man, it is ok to put the old man in his grandson's house.

Please note that this answer is based on general traditional concepts and moral norms, and the specific burial arrangements need to be decided according to the actual situation and local customs.