What is the main conflict in A Single Shard by Linda Sue Park?

A Single Shard illustrates that how the determination of one boy to follow his dreams can change his life forever. Tree-ear, orphaned and living under a bridge evolves to a helper for potter Min after he breaks a clay box to being Min’s adopted son and apprentice after overcoming adversity on his journey to Songdo, Korea that leaves only a shard of Min’s work to show in hopes of royal commission.