There is a dish in the notes of grave robbery, which appeared in ipartment and was used by Guangu.

"Dragon hunting ruler", also known as "geopneumatic ruler", has a history of 5,000 years in China and the West. Cambridge Encyclopedia Dictionary translates it as "detecting water source or vein with a stick", which is a traditional method to detect underground objects such as underground water source. The prospector walked through the exploration area with a fork-shaped stick or pendulum clock and observed the swing of the instruments used. This method is very popular, but the empirical research results of its effectiveness are inconclusive. The neutral name is called probe stick. Someone once turned it into a divination stick and wand, and some friends in the geomantic geography circle called it a dragon ruler, a dragon rod, a dragon probe and so on. This is to use the sensitivity of the human body to release this subtle and exquisite induction through the reaction, swing and rotation of the walking stick, and turn it into a visible and regular signal, from which people can learn the correct information, so as to engage in the work of finding people, finding things, exploring water sources, exploring mineral veins, exploring historical sites, divination and so on. And it is an accurate anomaly.

"It relies on magnetic fields and gravity to sense and points to the target through the rotation of the pointer. Looking for water, looking for treasure, looking for a girl is no problem! " Well, that's what Guan Gu said. Simply put, it seems to be used to find what you are looking for.