Answer:
traps of crossbows poised to fire on intruders
Step-by-step explanation:
The story of Qin Shi Huang and his burial place remains a living legend and a great unknown. According to the Chinese historian Guo Zhikun, specialist in the Qin dynasty, a series of lethal mercury poisonous weapons, explosive traps with automatic arrows were installed in the tomb chamber that belonged to a great underground palace as luxurious and pharaonic as all the constructions that they accompanied him in life.