Qin Shi Huang Mausoleum - Level 6-4 is the third and the last spin-off level of Qin Shi Huang Mausoleum - Level 6-1 in Plants vs. Zombies Online. There are three pathways in this level. When this level is finished for the first time, the player will get 50 upgrade sun and 3 Lightning Reed Puzzle Pieces. To get all three stars, the player must protect the endangered Bruce Bamboos, and not lose any lawn mowers.
- This time, the player has to protect all 3 Bruce Bamboos, so they have to pay attention to many zombies like Hawker Cart, Shield Guardian Zombie and especially, Archer Zombie.
- Do what you need first. Kill the first zombies with cheap attack plants. Plant a Venus Flytrap in front of the endangered Bruce Bamboos and a Wall-nut to protect Venus Flytrap. Remember to replace the Wall-nut with an another one every time that Wall-nut has been eaten.
- Use the Bruce Bamboos to kill the zombies on the pathway. Plant Wall-nuts and avoid letting the zombies going on the pathway, which makes the Bruce Bamboos have to deal with them.
- When you're in trouble, use Plant Food.