To prevent the craftsmen from divulging the secrets of the mausoleum, after Qin Shi Huang's burial, Qin Er Shi ordered to bury them between the inner city and outer city of the underground palace.
To prevent the craftsmen from divulging the secrets of the mausoleum, after Qin Shi Huang's burial, Qin Er Shi ordered to box them up BOX WHAT UP? THE CRAFTSMEN? "BURY THEM"? between the inner city and outer city of the underground palace.