A few years ago there was a major compaison of leaving/wiping footprints on the ground between Xiao Feng and Jueyuan. Also in HSDS, Abbot Tianming thought that no one can leave footprint on the ground (thus Jueyuan needed the chains).
Now in LOCH, Wang Chuyi was able to leave a 1 foot deep footprint on the ground:
那道人并不答话,伸出左足向前踏了一步,随即又缩脚回来,只见地下深深留了一个印痕,深竟近尺,这时大雪初落,地下积雪未及半寸,他漫不经意的伸足一踏,竟是这么一个深印,脚下功夫当真惊 世骇俗。
Did he just do something that no one can do in HSDS (without chains)?