25. Why did Emperor Qin Shi Huangdi employ alchemists and search for elixirs of life?

a. To preserve his legacy
b. To achieve immortality
c. To enhance his army's strength
d. To find hidden treasures
26. What material were the Terracotta Army soldiers made of?
a. Clay
b. Bronze
c. Marble
d. Wood
27. What was a significant feature of the Terracotta Army that differentiated soldiers from each other?
a. Unique expressions
b. Different weapons
c. Varied hairstyles
d. Individual ear shapes