It was good old Rick who ultimately stopped the emperor, however, killing him with a cursed dagger. They both sacrificed their immortality to bring back General Ming's army, who battled Han's forces. She turned out to be the daughter of Zi Yuan, who is still alive thanks to the waters of the mystical mountain utopia. In Shanghai (where Jonathan had opened an Egyptian-themed club named Imhotep's), they teamed up with Alex and Lin, a local girl who helped them locate Shangri-La in the Himalayas.
Unbeknownst to them, the eye was the key to resurrecting the emperor, and, after it was taken from them, Han was brought back to life. Rick and Evie had been working as spies for the British government during World War II, and they were asked to carry out one last mission: return a priceless artifact called the Eye of Shangri-La to China.
The Bembridge Scholars have been begging Evie to work with them, love. The child is putting on the Scorpion bracelet, cool cool cool. Wilson was secretly working with the people who funded the trip, a rogue faction of the Chinese military that wanted to bring the tyrannical emperor back to life. Not them letting the kid handle the cursed box.