First of all, the base must be raised to the top, the base will appear after the rise to the top of Uncle Lai, but to summon Uncle Lai there are conditions, to the Holy Knight, super mermaid, Wali female principal's mother, the mage's grandpa, etc., these things did not build is not able to summon Uncle Lai, that is to say, the warrior's two branches should be raised to the top, the archers should be raised to the top, the beautiful woman should be raised to the super mermaid, the mage should be raised to the top level to summon Uncle Lai.