fabricate; make up sth out of one’s head ❍ 作家必须深入实际，深入群众，～是写不出好作品的。Writers should go deep into the realities of life and immerse themselves among the masses,because they can not write anything good just out of their own heads.
向壁虚构
make up out of one’s head;fabricate 那全是～的。That is sheer fabrication (or imagination)./～的友谊friendship based on fiction;unreal friendship
向壁虚构xiànɡ bì xū ɡòu
向着墙壁凭空虚构出来。比喻凭空捏造。fabricate, make up out of one’s head, create out of nothing