1. An information processing method performed by a terminal device, comprising: receiving an input character input by a user; displaying, according to the input character and in a ring arrangement around the input character, candidate characters corresponding to the input character, wherein the input character is Chinese phonetic alphabet, and the candidate characters are Chinese characters, the input character is shown in a hexagon, candidate characters are displayed altogether in six directions of the hexagon comprising: upper left, lower left, upper right, right, and lower right; identifying, through a gravity sensor or a displacement sensor, an action performed by a user on the terminal device; obtaining selection information corresponding to the action performed by a user on the terminal device, for selecting one candidate character as a to-be-processed character, wherein the correspondence between an action performed by a user on a terminal device and selection information comprises: tilting the terminal device to the upper left corresponding to selection information 1 indicating an upper left, tilting terminal device to the upper right corresponding to selection information 2 indicating an upper right position, tilting the terminal device to the left corresponding to selection information 3 indicating a left position, tilting the terminal device to the right corresponding to selection information 4 indicating a right position, tilting the terminal device to the lower left corresponding to selection information 5 indicating a lower left position, tilting the terminal device to the lower right corresponding to selection information 6 indicating a lower right position, lifting the terminal device upward corresponding to selection information 7 indicating a previous page, and lifting terminal device downward corresponding to selection information 8 indicating a next page; determining, according to correspondence between the selection information and a candidate character position, a candidate character in the position corresponding to the selection information as the to-be-processed character without receiving any key pressing input from a user; and displaying the to-be-processed character in an input box; or displaying the to-be-processed character in an input box and displaying, around the to-be-processed character, associated characters related to the to-be-processed character.