Chu knows that before age 60, he won't have the time to develop his artistic abilities to the full because of the responsibilities of business, teaching and family. He hasn't yet the freedom to give his ideas full rein, but he can develop and accumulate the necessary skills.
他自知 60 歲以前不可能成為藝術家，因為有公司、教職、家庭的責任，無法隨心所欲地做自己內心想做的，但是卻可以累積能量。