Hewett is certainly looking in good form as he breezed through this match, with his movement on court three and accuracy of his shots too much for Zhenxu.
He twice saved break points in the opening game but then won the next 11 points to move into a 3-0 lead.
The Briton continued to dominate and looked on course to win the opener without losing a game, but Zhenxu got off the mark in the sixth game before Hewett closed out the set.
Hewett broke early again in set two, setting the tone for the remainder of the match as he swiftly wrapped his progress into the last four.