Toffee leaves will turn purple-red or purple-black in an environment with sufficient sunlight and large temperature difference.

A succulent plant refers to a plant with thick and juicy leaves in its roots, stems and leaves, also known as a "succulent plant".

It has at least one fleshy tissue, which is living tissue. Among other functions, it can store available water. When the soil water content deteriorates and the roots of plants can no longer absorb and provide the necessary water from the soil, it can make plants temporarily live independently of the external water supply.