In the early 1830s, Morrison's son John trained Wat to use the mission's recently imported Albion press and in the art of lithography, which reduced the effort, time, and expense of printing. From this, Wat has been called the first Chinese to master the craft, although his work is often overlooked by Chinese scholars. He busied himself with printing at Macao, distributing his works among his family and acquaintances and explaining their content. He ran Medhurst's printshop in Guangzhou after 1832, Morrison probably having removed the lithographic machine there from Macao. He used it to print "scripture sheets, tracts, &c."