Tomb Raiding: Trading Across Worlds, From the Start I Trade with Doraemon

[Tomb raiding + System + original heroine + no romance]

When she opens her eyes, archaeology student Li Li discovers that she has transmigrated into the world of The Grave Robbers' Chronicles.

The good news: She has a cheat!

The bad news: She's bound to the Myriad Worlds Trading System!

Trade?

Li Li is on the verge of tears. She looks down at her empty pockets. She's so broke they don't even jingle. What am I supposed to trade with?

Ding! Doraemon has posted a trade offer: five dorayaki for a high-powered flashlight!

Ding! Your friend Gray Wolf is online. Five sausages for a weather-changing cube!

Li Li lets out a sigh of relief, her eyes lighting up.

“You should've said so sooner! That's all? Snacks? I've got plenty!”

She gives Doraemon some dorayaki, and a doctor's medical case appears in her hand.

She gives him a red bean snow-skin cake, and gets herself an X-ray scanner.

From then on, she can stride through the Seven-Star Lu Palace and swim wherever she pleases in the Xisha Underwater Tomb.

What? Pan Zi and A Ning are going to die in the tomb?

Hee-hee, not a chance. Not happening!

Many years later, when the tomb-raiding factions from all across the land speak of her:

“You call her a little girl? She's clearly the holy maiden of the tomb-raiding world!”

“Even a ten-thousand-year-old zongzi has to call her Grandma!”

And yet...

Wu Xie: “Little Li, what snacks are you bringing to tomorrow's tomb?”

Fatty: “How about steak tonight? We can fry it in that pan of yours, the one that goes bang-bang when you smack a zongzi with it?”

Xiao Ge: “...Li Li, are you sure we hadn't met before?”