In this episode, there is a letter and a token from the Night Pearl in the opening kit of 42 episodes. This is the death of Qin Shihuang and the martyrdom of Li Fei (Yu Shu took the elixir of life). The whole country, Nana Ogawa is ready to go out of the city to form a rebel army, but Xianyang is closed and desperate. The toolkit for opening the Night Pearl is to raise money for Nana Ogawa (the price is lower than that of gold and silver jewelry, and it is easier to get). Token is to get fast horses (two fast horses given to Lao Cui by the king of Qin) from the post office outside the city in order to escape.