On December 19, the A-share market strengthened in the morning, with the Shanghai Composite Index opening high and rising, and the ChiNext Index once increasing by more than 1.5%. As of the midday closing, the Shanghai Composite Index rose by 0.59%, the Shenzhen Component Index rose by 0.93%, and the ChiNext Index rose by 0.99%. The total market turnover in half a day was 1.1 trillion, an increase of 44 billion compared to the previous trading day, with nearly 4,700 stocks rising.#热门话题 
In terms of sectors, retail, nuclear power, and dairy industries led the gains, while precious metals and film and television sectors led the declines.
Specifically, today the consumer sector performed strongly, with retail, food and beverage, and rewarding economy sectors all showing impressive performance. Debi Group, Dalian Friendship, Xiwang Food, and Dongbai Group hit the daily limit, while Sanxiang Impression achieved two consecutive limit-ups, and Tianchuang Fashion, Central Plaza, and Shanghai Jiubai also hit the daily limit.
On the news front, according to the Ministry of Commerce, the General Office of the Ministry of Commerce and the General Office of the Ministry of Finance recently issued a notice (on doing a good job in the pilot projects related to new consumption formats, new models, and new scenarios), launching pilot projects in 50 cities including Beijing.
In addition, the controllable nuclear fusion sector has strengthened, with stocks such as China First Heavy Industries, Prince New Materials, Baile Electric, and Snowman Group reaching their daily limit.
Today, newly listed stock Youxun Co., Ltd. saw its intraday increase exceed 450%, and by the end of the midday close, it had risen by 345.22%, reported at 230 yuan/share.
Public information shows that Youxun Co., Ltd. is mainly engaged in the research, design, and sales of optical communication frontend transceiver chips, located upstream in the industry chain; main products include laser driver chips (LDD), transimpedance amplifier chips (TIA), limiting amplifier chips (LA), and optical communication transceiver integrated chips, etc., as a fabless semiconductor design company.