Filecoin 测试币领取操作视频
http://mathwallet.oss-cn-hangzhou.aliyuncs.com/blog/2020/7%E6%9C%88/filecoin%E9%A2%86%E5%8F%96%E8%A7%86%E9%A2%91/20200707162535_FULLHD.mp4
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