(1) The observed object is an inanimate object, and the standard for judging left and right is generally the observer.

(2) The object of observation is human or animal, and there are two situations.

(1) When people or animals are asked about their bodies, people or animals are generally taken as the standard.

(2) When the question asked does not involve the left and right sides of the human or animal body, whoever is the standard can be used.