The Qian envoys sent to the Qi Kingdom to inform them of Han Zheng’s imprisonment were murdered, further fracturing the already fragile relations between the two kingdoms. To mitigate this and to save Han Zheng, Chi Lan and Han Lin from the Qi Kingdom set out for the Qian Kingdom with the order from King Xue Qi that the Qian-Qi Six Agreements were the priority of their visit… above all else, including Han Zheng. (Source: frankly at MyDramaList)