Two-character rendering of 'Tommy':
托 (tuō) for 'To-',
米 (mǐ) for '-mmy'. The full name Thomas is
托马斯 (Tuōmǎsī). One famous bearer:
托米·
李·
琼斯 (Tommy Lee Jones, the actor). Note: the British WWI nickname for an English soldier 'Tommy' is also rendered this way.