He estimates that the pottery fragments recovered at the site in recent years could fill five small trucks.

The couple often work late into the night, driven by their shared dedication.

They attribute their ability to balance archaeological work with farming duties to advancements in agricultural mechanization, which have resulted in them having more free time.

The couple give nearly all their free time to archaeological work.

Apart from excavation and restoration, Wang keeps notes and makes individual files and documents for artifacts unearthed. Zhao Yong accompanies his wife every day, working late into the night.

"Once you become involved in archaeology, even for a year, you naturally develop a passion," Zhao Yong says. "It's incredibly meaningful."