What is the expressive function of "Jing" in the ancient poem "Spring Sorrow"?

These are two sentences from Taiwan Province poet Qiu's "Sorrow in Spring". The original text is: it is difficult to see the mountains in spring, and the past is thrilling and tears are pouring down. Four million Taiwan Province compatriots burst into tears. Today last year, the day when the motherland was ceded! This four-line poem was written in April of 17 and 1896 after the first anniversary of the signing of treaty of shimonoseki, which can be described as a memorial to the anniversary of the fall of Taiwan Province Province. The only way to understand the poet's profound thoughts and feelings is "national humiliation in Japan" or "Taiwan Province Province occupied Zhou Nianji". "The ugly mountain in spring" seems dull, but in fact it contains particularly rich emotions. In this poem, Qiu quoted a poem from the Tang Dynasty poet Du Fu's Spring Hope: "A leopard cannot change his spots. Petals fall like tears, and lonely birds sing their sadness. " Du Fu wrote about the Anshi Rebellion. The spring scenery is still the same, and the landscape is still the same. However, the country broke the people and moved, even the flowers shed tears for the country, and the birds were thrilling for the people. Ruthless flowers, birds, fish and insects feel sad about the status quo, and poets naturally have to talk more about their inner pain. Autumn wants to climb a mountain near the water in the beautiful spring, and use the beautiful spring to relieve the pain in her heart, which is the sadness and pain trapped in her heart because of the fall of her hometown of Taiwan Province last year. The word "strong" shows that this kind of "spring worry" is a kind of contradictory mood that neither spring scenery nor natural landscape can cure one's inner sadness, and describes a person's complex mood that he wants to forget his troubles temporarily by climbing a mountain but is afraid that spring will touch his inner pain. The second sentence, "The past was thrilling and tears streamed down her face", tells the answer to the word "strong" in the first sentence, and Du Fu's poem "Where the petals once shed tears, where the lonely bird once lamented" is also directly used in it. "Past events" obviously refers to the poet's failure to organize an uprising army to defend Taiwan Province against Japanese aggression and the fall of Taiwan Province Province a year ago. This further shows that the poet's worry about spring is by no means a girl's sadness about spring, like "what a beautiful day, who enjoys his home", nor is it a sigh of ordinary literati "the mountains and rivers are so full, missing the distance, falling flowers and storms are more harmful to spring, so it is better to pity the present". The poet's worry about spring is heavy and a great worry about national humiliation. How can it not be shocking? How can you not burst into tears? How does the scenery in your eyes dispel a trace of anger in your heart? Therefore, it is difficult to see the mountains in spring, and the past is shocking and tears are streaming down her face. The focus is on the venting of the poet's patriotic feelings.