The next sentence is in the middle of nowhere.

The underworld is haunted. This sentence is a proverb. The first part is about the dead playing tricks on people, and the second part is about the underworld playing tricks on people. Proverbs are similar to idioms, but colloquial, easy to understand and generally express a complete meaning. They are almost one or two short sentences in form, and include a wide range of agricultural proverbs, such as "planting melons and beans before and after Qingming Festival"; Some are rational proverbs, such as "As you sow, you reap"; Some common sense proverbs belong to all aspects of life, such as "modesty makes people progress, pride makes people lag behind", "walk a hundred paces after dinner and live to be ninety-nine" and so on.