May 4th every year is China's "May Fourth Youth Day". This festival originated from a magnificent patriotic movement in 1919, which not only changed the course of Chinese history, but also forged the spiritual backbone of generations of Chinese youth.

May 1st International Labor Day, also known as "May 1st International Labor Day" or "International Day of Demonstrations and Processions", is celebrated annually on May 1st and is a national holiday celebrated by more than 80 countries around the world.

Today's Grain Rain is the sixth solar term among the 24 solar terms and the last solar term of spring, usually between April 19th and 21st in the Gregorian calendar. Grain rain is derived from the meaning of "rain produces a hundred grains", which implies that spring rain is abundant, nourishes the five grains, and all things enter a stage of vigorous growth.

Qingming Festival is an important traditional festival in China and one of the twenty-four solar terms. It usually falls between April 4th and 6th in the Gregorian calendar and combines both natural and cultural connotations.

The spring equinox arrives, bringing warmth and not letting down the good season. When the spring breeze brushes away the chill, all things break free from their shackles and grow freely. Every ray of fresh breeze carries hope, and every inch of warm sunshine nurtures new possibilities. The spring breeze soothes the mind, accompanied by tenderness, and injects a continuous stream of strength into every step forward.

Spring and clear scenery bring about the growth of all things. Every year on Arbor Day on March 12th, we plant trees to add greenery to the earth and protect our ecological home. But green and sustainable development is never just about "planting green on the ground" - in the core scenarios of industrial production, choosing environmentally friendly and energy-saving materials is also an important practice for reducing ecological burden and storing energy for the future.