The wilderness was cold in winter despite wind being blocked by the mountain ranges and hot springs flowing through. The discussion between the Palace and the Central Plains was at its height after a few days of it.
The cavalryman of Divine Hall had escorted the noble forth as the Chanyu's consort loved flowers but was unable to cultivate them in the harsh weather conditions of the Wilderness. A letter had been written, pleading for the Divine Hall to allow Lu Chenjia to visit the Palace to learn about horticulture in person.
This had nothing to do with the discussion. But they had left just as the discussion came to a stalemate. It was just like the girls from the Great River Kingdom who were sending grains. They were intricately linked.