The new possessor of the wonderful book studied it eagerly and strove day and night to reduce its precepts to practice. Before long he could summon the winds and command the rain, and became known as The Mystic of the Way of Peace. Soon he could test his other powers. With a change of reign-title appeared a terrible pestilence which ran throughout the land, whereupon Chang Chio distributed charmed remedies of which the success gained him the title of the Wise and Good Master. He began to have a following of disciples whom he initiated into the mysteries and sent abroad throughout all the land. They, like their master, could write charms and recite formulae and their fame increased his following. He began to organise his disciples. He established thirty six circuits, the larger with a myriad or more members, the smaller with about half that number. Each circuit had its chief who took the military title of General. They talked wildly of the death of the blue heavens and the setting up of the yellow; they said a new cycle was beginning and would bring universal good fortune, and they persuaded people to chalk the symbols for the first year of a cycle on the main door of their dwellings. With the growth of the number of his supporters grew also the ambition of the “Wise and Good.” He dreamed of empire. One of his partizans, Ma Yüan-i, was sent bearing gifts to gain the support of the eunuchs whereby to have allies within the palace. To his brothers Chang Chio said, “For schemes like ours always the most difficult part is to gain the popular favour. But that is already ours. Such an opportunity must not pass.” And they began to prepare. Many yellow flags were made and a day was chosen to strike the first blow. Then they wrote letters to the chief eunuch, Fêng Hsü, and sent them by a follower, who alas! betrayed their trust and discovered the plot. The Emperor summoned his trusty General Ho Chin and bade him look to it. Ma Yüan-i was at once taken and put to death. Fêng Hsü and many others were cast into prison. The plot having thus become known the Changs were forced at once to take the field. They assumed grandiose titles, Tʻien Kung, or Celestial Duke, Ti Kung, or Terrestrial Duke, Jên Kung, or Duke of Humanity, and in these names they put forth this manifesto:—“The good fortune of the Hans is exhausted and the Wise Man has appeared. Discern the will of Heaven, O ye people, and walk in the way of righteousness, whereby alone ye may attain to peace.” Support was not lacking. On every side people bound their heads with a yellow turban and joined the army of the rebel Chang Chio, so that soon his strength was exceeding great and the official troops melted away at a whisper of his coming.