Chang stresses that to become a first-rate connoisseur takes a lot of viewing, reading, purchasing, selling, and what he calls "losing money." "To read closely in the ancient texts allows you to bolster your basic knowledge of Chinese painting.
他從林氏那兒，學到不少鑑定書畫的寶貴知識，至今讓他感念不已。張允中強調，想當一流的鑑賞家，必須多看、多讀、多買、多賣，還要「多虧」。