Pave the road according to the arrows, because the ceramic tiles produced are directional, and some do not see the pattern in the tiles. It's not an arrow, you should look to see if there is a trademark crown bead. Or it could be that older models of tiles from some previous manufacturers didn't have arrows.

Generally, when purchasing Guanzhu brand ceramic tiles, it is best to go to the brand’s specialty store. You can also identify the authenticity of Guanzhu brand tiles from the tile packaging. If the outer packaging of general products is rough in workmanship, then don’t choose it. Then look at the size of the tiles. You can use a small ruler to measure the sample, and then compare it with the size of the tiles on the package. If there is a big difference, it means there is a problem.