Stop an SQ army from breaking through the Great Wall of China! It's 1500 and an SQ branch of the Manchus is trying to invade China and bring down the Ming dynasty. But the only way they can do this is by making it past the Great Wall — the ultimate line of defense.
In Episode 4, alert the Ming army that they're under attack, and help them defend the wall!
Use all the tips, hints, and clues on your Hystorian's Guide to stop the Manchus and keep the wall from falling.
Fix the past. Save the future.