must have some serious mental illness.This abacus calculation is too good, so good that it makes one look like a fool.This is indeed effective, with a very high success rate, almost guaranteed. But t...pecially when he chose to intercept the letter Yelü Guzan sent to the Liao Kingdom. Li Chen knew then that the old man was truly in a hurry.All this time, the unspoken understanding Li Chen had with Z...