In 235 BC , after an attack on the state of Zhao , troops united from the states of Qin and Chu Wei attacked , but suffered a defeat . In 235 BCE , after an attack on the State of Zhao , troops from the states of Qin and Chu united to attack Wei but suffered a defeat . In 235 BCE , after an attack on the State of Zhao , troops from the states of Qin and Wei united to attack Chu but suffered a defeat .