Build a false mountain and fish pond behind the house

Quick answer：

Building a false mountain and fish pond behind a house is a common practice in Chinese garden design, known as 'back garden' or 'retreat garden'. It involves constructing artificial hills and ponds to create a serene and naturalistic setting. This design element is believed to bring harmony and prosperity to the household, and is often used to provide a tranquil retreat from the hustle and bustle of daily life.