Really. Relevant data of Guizhou Daqu show that the unpacked Guizhou Daqu in the Year of the Ox is true. There is an anti-counterfeiting gold thread in the anti-counterfeiting label of Guizhou Daqu, which is embedded by special technology. Counterfeits are usually made of bronze gold thread. When we illuminate the anti-counterfeiting label with fluorescent light, we will find four circular fluorescent dark marks on its four corners.