Privacy control: use plants that block people's line of sight to enclose a clear and limited area. The purpose of privacy control is to completely isolate the space from its environment.
Difference: Privacy control is to enclose and divide an independent space, so as to close all the lines of sight in and out of the space, while the barrier is a plant barrier, which selectively blocks the lines of sight. Private space is absolutely free to walk in a closed space, while barriers are allowed to walk freely in plant barriers. Privacy control is usually considered when designing private places or residential buildings. Privacy control is often used in the greening design of villas and villa gardens. Barrier landscape is widely used in private gardens of classical gardens in China.