Feng Guifen: Western Ideas Appreciated: He appreciates the way westerners have found the way to measure the movement of earth and sun and other heavenly bodies which can help China establish a calendar. The ways to clear sand from harbors used by westerners was also appreciated. The use of mechanical wheels by westerners is also appreciated which help Chinese can earn their living. Also, for agricultural and sericulture tools, and things required for the various crafts, they mostly use mechanical wheels, which require little energy but accomplish much. These can assist the people to earn their living.