Possible Clues:

• Shared part
• Lie partly on top of
• Duplicate
• Have too much stuff and beastly to drink too much of it
• Rest in part on a friend
• Past friend's return is a bit of a coincidence
• Extend on top of
• Drink too much in a beastly sort of way?
• Common area of interest ended by China withdrawing
• Have in common, as in a Venn diagram