Review of two articles by Jing Ping Wang "The Hunter-Saxton equation: remarkable structures of symmetries and conserved densities" (Nonlinearity 23 (2010) 2009-2028, arXiv:1008.3085) and "Lenard scheme for two dimensional periodic Volterra chain" (J. Math. Phys. 50 (2009) 023506, arXiv:0809.3899)