How to check whether the eight characters have Wenchang?

Does the eight-character search method use wenchang star?

The sun is dominant, and the other four are the position of the god of food, which is also the temporary official position of the zodiac.

For example, A takes the fire of C as the god of food, and C takes the position of Lu as the secretary, that is, when the sun is dry, A will lead wenchang star. B takes Ding as the god of food, and Ding's position is noon, so wenchang star is seen at noon every day.