What episode is the final battle of the Swallow Gate treasure hunt?

Now it's the 30th episode, and a group of people have arrived according to this Tibetan poem. It's actually a public toilet. Shi firmly believes that this treasure must be under the public toilet, urging Xu Tietou and Daniel to dig it together. As a result, I found nothing for a long time. Shi told me that according to Tibetan poetry, the treasure should be there, but it was not excavated. Li San thinks that the Jingwei Road in Jinan is the other way around, maybe not longitude one latitude three but longitude three latitude one, and this longitude three latitude one is the police station. Joy chen also learned the secret of the treasure from Wang Xing, and found that the place where the treasure was located was the police station under his feet. But the size of the police station and the location of the treasure are unknown. Finally, illiterate Daniel stumbled upon the secret of this poem. It turns out that the four words of that poem will be combined into a TIC-tac-toe, indicating that the treasure is underground in the police station. Li San sneaked into the police station and went underground. There is indeed a secret room, but there is nothing in it. It turns out that this so-called treasure is just a joke.