What are the afforestation techniques of gardens in China?

Generally speaking, the most important way for China classical gardens to break through the space limitation and create rich landscapes is to adopt tortuous and free layout, divide scenic spots and spaces, and "borrow scenery". The so-called tortuous and free layout is relative to the geometric pattern layout commonly used in gardens in some countries in continental Europe. This tortuous and free layout is particularly prominent in small private gardens in the south of the Yangtze River. What they emphasize is deep twists and turns, and the so-called "Jing Gui Shen, no bend, no depth" is this technique. For example, at the entrance of most gardens in Suzhou, rockeries, small courtyards and leaky windows are often used as barriers to properly block the sight of tourists, so that people can only vaguely see the corner of the garden scenery when entering the garden gate, and only after several twists and turns can they see the whole picture of the hills and pavilions in the garden. Suzhou Lingering Garden is characterized by compact layout, changeable scenery and wonderful scenery. It pursues the harmonious unity between architecture and nature at the entrance of the garden and pays attention to space problems. Its spatial image is often symbolic, vague and abstract. These modern concepts have already appeared in the process of China's construction of China traditional gardens, and have been amazed by the world, and gradually applied to the so-called modern gardens.