The ancient trees in the imperial garden are accompanied by the classical buildings, which complement each other. That is, there are too many visitors and it is not easy to take pictures. The "Lian Libo" in Tianmen is known as the symbol of loyal love; the "Pan Long Huai" in the southeastern corner is the oldest one in Beijing; most of the other ancient trees are Chinese cypress. There is a "Tuixiu Pine" on Mount Duixiu, a white pine, and the same pine tree in the Cining Palace Garden. Near the shadow wall of Beimen, there are two ancient cypresses on the left and right of the bronze statue of Lijin; the curly and vigorous trunk, the dark and wrinkled bark, and the sad shape formed by the ruthless years, make people sigh with emotion.