Group 1 - The article discusses the transition of seasons in Beijing, particularly the arrival of the "Chushu" solar term, which brings a refreshing change in climate and influences people's moods [1] - Historical literary works and calligraphy from various dynasties are referenced, showcasing the artistic expressions related to the autumn season, including pieces by Su Shi and Wang Xizhi [1] - The "Jiu Hua Tie" (韭花帖) by Yang Ningshi is highlighted as a significant calligraphic work, inspired by the enjoyment of a dish made from chive flowers, reflecting a sense of tranquility and appreciation for the season [1] Group 2 - The aesthetic qualities of the "Jiu Hua Tie" are analyzed, noting its spacious layout and the contrast between dense and loose spacing, symbolizing the transition from heat to coolness associated with the Chushu period [2] - The calligraphy is described as embodying a serene and unadorned beauty, devoid of the restlessness and anxiety found in everyday life, inviting readers to enjoy the peacefulness of the season [2] - The article emphasizes the subtle changes in the mindset of calligraphers during seasonal transitions, with "Jiu Hua Tie" representing a moment of calm amidst the chaos of life [2]