Tā de lùnwén pāozhuān yǐnyù, yǐnfā le guǎngfàn tǎolùn.
His paper was a starter-brick that sparked broad discussion.
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From 宋·释道原《景德传灯录》 — a Chan anecdote where one master tried to 'toss out a brick to draw jade' but only got another brick back. Modern usage keeps the self-deprecating framing: the speaker offers a rough idea and hopes for polished responses.
