Original sentence: According to Joseph Needham in "Science and Civilisation in China":.It is not clear exactly where and when the crossbow originated, but there is undoubted evidence that it was used for military purposes from the second half of the 4th century BC onwards
Edited sentence: According to Sir Joseph Needham in his monumental encyclopedia: "Science and Civilisation in China":.The crossbow was invented in ancient China, furthermore, there is vast archaeological evidence that it was used for military purposes from the second half of the 4th century BC onwards