[Iron-work.] The trade of a blacksmith is regarded by the Lhotas as a very unlucky one, and is restricted to the families members of which have been blacksmiths in the past. It is believed that no blacksmith lives long after he stops work. It is therefore not surprising that Lhota blacksmiths are few and far between. Nor is there much need for them. Villages near the plains buy all they require from Assamese smiths. The Rengmas are great blacksmiths and make all the weapons and implements required by the Southern Lhotas of the inner ranges, while the Northern Lhotas are supplied in a similar way by the Aos. The few Lhota blacksmiths there are use foreign tools bought from the plains, though an indigenous type of bellows (yongphophen) is still in use in places. This consists of two sections of bamboo set up perpendicularly side by side in a clay base. Into each of these is fitted a piston bound all over with hen’s feathers with their thin ends down. The downward stroke of the piston being against the “grain” of the feathers and the upward stroke with the “grain,” quite an efficient valvular action results. These pistons are worked alternately by an assistant who holds one in each hand. At the bottom of each piston-case is a hole, to which is attached a bamboo tube (zendro). These tubes emerge together at the fire. Only soft iron is used. This is obtained from the plains in the form of old tea-garden hoes. Formerly iron is said to have been found and worked at Khoro Ghat on the edge of the plains, by a village of the Thangwe clan according to one tradition, or by Shans or Burmese according to another. [73] The finished article is tempered by being dipped in water. This tempering is not meant to be final. The purchaser after using the dao, or whatever the article may be, for a time, heats it in a fire of the slow-burning bark of a certain tree (lepokriphu) and tempers it in salt and water, or bamboo-pickle and water to his taste. So impregnated with misfortune is the whole trade of the blacksmith that no house is ever built on the site of an old forge, though the forge is allowed to be built inside the village. To bring a piece of dross from a forge into a house would cause all the inmates to fall ill. With this in mind a woman in Yemkha in 1919 left a piece of dross as a parting present when she ran away from her husband.