There's an old saying that goes, "Read 10,000 scrolls, travel 10,000 li." Throughout history, many people have, like Liu and Huang, used their travels to test and reflect on what they have learned.
「讀萬卷書、行萬里路」，歷史上有太多像劉珮如、黃筱姮這樣用旅行見聞來印證所學的例子。