Episode 20 - S1.E20

Members of Wa Shan School come to save NG. NG devoted his life to protect PUN and FUNG. NG is killed by SUN. PUN and FUNG meet PUI who is stealing money to buy medicine for TIP. They reunite and go to find black metal and CHING, who is a talented blacksmith. However they are told by NGAU that CHING has died. They are astonished to see that CHINGs gravestone is very hard. They realize that it is made of black metal. Meanwhile NGAU is inspired to tell how to make weapons with black metal. They get a sabre, a sword and a spear with black metal and determine to kill SUN for justice and chivalry.