Complex sentence: On hearing this, Ratan Singh saw a chance to escape the fury of the emperor and retain his kingdom, so he was ready to show his wife to the emperor, a desperate but shameful act at those times.
Split into simpler sentences: On hearing this, Ratan Singh saw a chance to escape the fury of the emperor and retain his kingdom. Therefore he was ready to show his wife to the emperor, a desperate but shameful act in those times.