CHINESE shares finished mixed yesterday ending a relatively quiet week on both exchanges. A Credit Lyonnais official said yesterday that both A and B shares in Shanghai ended moderately lower. He said A shares in Shenzhen edged up to close slightly higher and B shares ended marginally lower. Entering yesterday's trade the markets had been sluggish, a general characteristic since Tuesday's surge, especially on the Shanghai A exchange. On Tuesday, the Shanghai A index rocketed 8.12 per cent, mainly on the announcement of company results by eight firms. It was helped by the closure of the over-the-counter market in Tianjin, which resulted in a heavy inflow of cash used to buy Shanghai issues. For the most part, investors and speculators have shown a reluctance to return to the market in any large numbers following that early week spurt.