C283 White Jade Temple Arrival

I cunningly smiled and said, "The main way to identify gold is to 'weigh the weight, look at the color, sound, and strength'." Ordinary adulterers often add copper powder or topaz to their gold. This type of gold can be found out by burning it with fire. The second type of adulteration was what third brother said about adding silver to the gold. Silver was not afraid of fire