Looks like a beggar at close range, but looks like a refugee at a distance. In fact, it is the cost of learning.

Looking like a beggar from a distance is actually the cost of learning. Some people may look poor or humble, but in fact, their major or industry is very technical and promising, so we can't judge a book by its cover. This is a network term. "Learning cost" refers to learning the major of construction engineering cost, which is a highly technical subject, paying more attention to mathematics and computer knowledge, involving civil engineering, architectural design, financial management and other fields, and is an indispensable part of the construction industry. Therefore, the meaning of this sentence is that a person's ability and value can't be judged by appearances. Only by knowing his own profession and work can he truly understand his own value and contribution.