The verbal agreement between the Han and Tang Tribes was settled just like that. It mainly covered two points.
First, they would jointly research and develop medical technology and medicinal herbs, with the two tribes sharing the relevant research results.
Second, technical support for civil projects would be provided through equal trade between the Han and Tang Tribes. The Tang Tribe would submit requests for specific projects, and the Han Tribe would assess their prices.
The first point required Tang Yao to remain in the Han Tribe so she could jointly research the projects Luo Chong had formulated. However, she could not simply stay behind. Tang Yao's identity was no ordinary one—she was essentially the Tang Tribe's heir. If someone like her remained in the Han Tribe without saying a word and never returned, it could very well provoke a war.
Therefore, she had to return first and report the results of the negotiations to Tang, the Chieftain, then come back to the Han Tribe to participate in the research after obtaining his agreement.
Luo Chong had thought the same way himself. After all, the projects he had mentioned were all built on the foundation of the Medical College. The Medical College had not even been completed yet, so keeping Tang Yao behind would be useless and would only make the Tang Tribe worry needlessly.
The second point, trade, was not difficult in itself. Both sides were willing, so all they needed was an exchange of equal value.
But that was precisely where the difficulty lay, because the Tang Tribe produced practically nothing. They had nothing to sell.
Given this situation, Luo Chong simply drew up another agreement for them—a labor system designed to help them earn money.
*Since you have nothing I'm interested in, then sell your labor instead.