Possible Clues:

• Hidden or second self- in Latin
• Shift work to the East - China?
• Reform and say nothing to closest friend
• To regale other self
• Go, relate to other self
• Other self - large toe (anag)
• Hidden self or very close friend
• An army officer before leave becomes close friend
• Trusted friend could make Leo great
• Similar character? Change, say, may be linked to love