** Xiaocaiyuan International Holding's shares 2999.HK soar 8.4% to HK$10.14, marking biggest one-day pct gain since June 23

** Stock hit highest level since July 23, set to snap four-session losing streak

** Restaurant chain operator expects net profit for six months ended in June to rise compared to same period in 2024

** Says profit increase due to improvement in its operating efficiency

** Hang Seng Consumption Index .HSCGSI climbs 0.7%, benchmark Hang Seng Index .HSI gains 0.4%

** YTD, stock up 8.9%

($1 = 7.1785 yuan)

($1 = 7.8499 Hong Kong dollars)

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))