Core Viewpoint - The article discusses the phenomenon of "winter internal heat" in children, highlighting its symptoms, causes, and suggested remedies to alleviate the condition. Group 1: Symptoms of Internal Heat - Symptoms of internal heat in children include dry and cracked lips, foul breath, hard stools, restless sleep, and irritability. Other signs include a yellow and thick tongue coating, increased eye and nasal discharge, and a tendency to feel hot while having a normal body temperature [1][2]. - Children may also experience sore throats, swollen tonsils, and persistent coughs with yellow phlegm, indicating respiratory issues related to internal heat [1]. Group 2: Causes of Internal Heat - The article attributes the occurrence of internal heat to several factors, including excessive clothing leading to heat retention, high-calorie diets (meat, fried foods, nuts, sweets), insufficient water intake due to dry winter conditions, and reduced outdoor activity [2]. - Additionally, high indoor temperatures from heating systems can exacerbate dehydration and internal heat symptoms [2]. Group 3: Remedies and Prevention - Suggested dietary remedies include increasing the intake of cooling foods such as pears, white radishes, lotus root, and celery, while reducing consumption of fried foods and sweets. Drinking warm water in small amounts is also recommended [2]. - Lifestyle adjustments include maintaining appropriate clothing layers, ensuring proper room ventilation, and using humidifiers to keep humidity levels between 40% and 60% [3]. - Parents are advised to monitor their children's tongue coating, breath, stool, and sleep patterns, and to employ simple pediatric massage techniques for heat relief under professional guidance [3].

Core Insights - The article highlights the dedication and impact of Tian Zexuan, a retired agricultural technician, who has significantly contributed to local farming practices and community support in Hongtu Township, Enshi City [1][5]. Group 1: Agricultural Innovation - Tian Zexuan identified the low yield of local rice, averaging only 150 kg per mu, and promoted the use of high-yield hybrid rice seeds, leading to an increase in production to nearly 500 kg per mu for some farmers [3]. - He successfully introduced the cultivation of fish mint, which provided farmers with a lucrative alternative crop, yielding over 3,000 kg per mu and generating substantial income [4]. Group 2: Community Engagement - Tian Zexuan is known as "Master Tian" among local farmers, who rely on his expertise for agricultural challenges, demonstrating his role as a vital resource in the community [1][2]. - Even after retirement, he continues to assist farmers with agricultural issues, reflecting his commitment to community service and agricultural development [5]. Group 3: Personal Background and Career - Tian Zexuan, born in 1956, returned to his hometown after graduating from Enshi Agricultural School in 1980, becoming the only trained agricultural technician in a remote area [1][2]. - Throughout his career, he has been recognized for his contributions, receiving awards such as the "Outstanding Communist Party Member" and the "Wind Model Elder" title in 2023 [5].