Miscount?
Tournament officials explained to Uundai (through translator Murun Agvaan-ochir) that Uundai himself was the person who bagged the chips, and that the tourament officials do not touch the bags overnight and do not verify the counts. Most likely, tired at the end of a long day of poker, Uundai miscounted his stack when he bagged it.
Uundai, a bit disgruntled, accepted that explanation and moved on with his day.