<P> Now, however, there is another method (beyond earthenware type) that is both more exact and more convenient . A compositor's form is made of wood, strips of bamboo are used to mark the lines and a block is engraved with characters . The block is then cut into squares with a small fine saw till each character forms a separate piece . These separate characters are finished off with a knife on all four sides, and compared and tested till they are exactly the same height and size . Then the types are placed in the columns (of the form) and bamboo strips which have been prepared are pressed in between them . After the types have all been set in the form, the spaces are filled in with wooden plugs, so that the type is perfectly firm and will not move . When the type is absolutely firm, the ink is smeared on and printing begins . </P> <P> Wang Zhen used two rotating circular tables as trays for laying out his type . The first table was separated into 24 trays in which each movable type was categorized based on a number corresponding with a rhyming pattern . The second table contained miscellaneous characters . </P> <P> Using more than 30,000 wooden movable types, Wang Zhen printed a hundred copies of his county gazetteer, Records of Jingde County (Jingde xianzhi 旌 德 縣志), a text containing more than 60,000 characters . </P> <P> Wooden movable type printing became relatively common during the Ming dynasty and became widespread during the Qing era . </P>

Who set up the beginning of the printing process