What is "jadagan"

The jadagan (çatkhan, or Siberian harp) is a wooden board zither of the Khakass Turkic people of Russian Siberia, usually with 6 or 7 strings stretched across movable bridges and tuned a fourth or fifth apart. The body is hollowed out from underneath like an upturned trough. It has a convex surface and an end bent towards the ground. The strings are plucked and the sound is very smooth. The instrument was considered to be sacrosanct and playing it was a rite bound to taboos. The instrument was mainly used at court and in monasteries, since strings symbolised the twelve levels of the palace hierarchy.