扁花篾先用篾刀把篾整得又薄又细，然后去地里挖回核桃树皮，放一口锅里煮上几天，再把蔑捞起来，那些竹子就全变成黑色的了。
B-Thing I-Thing I-Thing O O B-Thing I-Thing O B-Thing O O O O O O O O O O B-Location I-Location O O B-Thing I-Thing I-Thing I-Thing O O B-Metric I-Metric B-Thing B-Location O O B-Time I-Time O O O B-Thing O O O O O O B-Thing I-Thing O O O O O O O O O