Cheng Xi traveled to Shahe and married the most naughty second prince of Loulan.
He lingered in the wine shop every day, while she studied the bamboo slips every night.
It wasn't until foreign enemies invaded and he was guarding the city gate with one man and one sword that she realized in surprise: "You are really pretending to be like him."
He wiped the blood off the sword and chuckled: "How do you find the person who wants to harm us?"
On the night of the palace change, he was covered in blood and held up the hourglass: "Cheng Xi, this object is related to your time travel."
"Actually, I met you two thousand years ago, in the history class of the 21st century -"
"I'm here for you, across two thousand years."
