The meaning of "Ji" is similar to that of "He" and "He". But it is used in more solemn and formal occasions. And "and" and "are not common. \ x0d“cum "is used on big banners, and it is written more; \x0d\ "Ji \" is commonly used in spoken language. X0d \ "cum \ "is used in solemn and elegant occasions, mainly because China people think that Founder's fonts are more stable and reflect solemn atmosphere. \ x0d“cum "is obviously more disciplined than" cum ",so it is often used in large-scale occasions. \x0d\ is even more necessary in some special names. \x0d\ "cum \ "is often used in solemn pragmatic occasions, such as logos, invitations, congratulatory letters, etc., such as" Notice on Holding Training Courses on Information Disclosure and Document Processing ". The word "and" in these places cannot be replaced by "and". In general, the word "and" in writing cannot be replaced by "and".