◎抛砖引玉pāozhuān-yǐnyù
[throw out a brick to attract a jade;(fig) offer a few commonplace remarks by way of introduction so that others may come up with valuable opinions] 抛出砖去，引回玉来。比喻自谦以粗浅的见解引出别人的高见
方才婢子费了唇舌，说了许多书名，原是抛砖引玉，以为借此长长见识。——清·李汝珍《镜花缘》
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