For the first time, all Chinese lands were unified under one powerful ruler. In that same year, King Zheng proclaimed himself the "First Emperor" (始皇帝, "Shǐ Huángdì"), no longer a king in the old sense and now far surpassing the achievements of the old Zhou Dynasty rulers. The emperor ordered the Heshibi to be made into the Imperial Seal, known as the "Heirloom Seal of the Realm". The words, "Having received the Mandate from Heaven, may (the emperor) lead a long and prosperous life." () were written by Prime Minister Li Si, and carved onto the seal by Sun Shou. The Seal was later passed from emperor to emperor for generations to come.