of the largest online communities in China. 02005 2005 &0000000046850000000000 46,850,000 [ 65 ] Open &0000000000000127000000 127 [ 66 ] Elftown Community and wiki around Fantasy and sci-fi . 02010 &0000000000185000000000 185,000 [ 67 ] Open, approval needed &0000000000017681000000 17,681 [ 68 ] Epernicus For research scientists 02010 Open &0000000000293955000000 293,955