Instead of keeping it a trade secret, Lin Jin told Tan Xun his technique. Tan Xun was so deep in thought that he didn't even realize that wine was spilling from the cup he was holding.
He had delved into a state of contemplation and analysis that nothing else could possibly catch his attention.
An hour later, Tan Xun was able to process the few simple lines that Lin Jin had conveyed to him. By now, Lin Jin had already eaten his fill.
He hadn't had anything to eat throughout the day so Lin Jin was starving.