Grandpa Amu builds a wooden arch bridge without nails. The master is in the folk


木拱桥,中国古老的榫卯技术,这座桥的特点就是没有胶水,没有钉子。搭建结构非常牢固。阿木爷爷中午把它完成了,在摄影的帮助下,也就是阿木爷爷的儿子。有了新 …

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