Even Leitz, the name revered by the snobs, started off “ borrowing” the lens design from other greats. Elmar is a variant of Zeiss Tessar, and 50mm Summilux is a repackaged British TTH Xenon (ok Leitz did pay TTH to use Xenon in their Summarit and improved it in their first Summilux).
My point is, when a company starts producing lenses, they have to start from somewhere, not trying to beat Dr. Paul Rudolph and invent a new lens formula. This was what the Japanese did. Most of the JP P&S camera and their TLR used a Tessar lens design. Cosina, a not that well known OEM lens company, purchased the right to use Voightlander, start naming their lens Ultron, Nokton, etc..and now they are known to be a good Leica-compatible lens manufacturer.
The Chinese companies are doing something somewhat similar. Just that some of them are more opportunistic (reads greedy) in capitalizing on classic Leica lenses (replica of 8E Summicron, 35 mm AA Summilux, steel rim, King of bokeh, etc). Remember they are trying to make money out of their lens business, not out to win a medal for the CCP. It is pathetic that another Chinese has to belittle his tribesmen presumably because he had made some quick bucks from stock market and could afford to buy a few expensive original Leica lenses. Sad!