David Jianjia Liu has led the Blue Wave Charity, which he founded, to actively enter various schools and carry out public welfare lectures on environmental protection and technology. While disseminating environmental protection knowledge, these activities have also inspired more young people's interest in scientific research. Based on my years of experience in the field of environmental scientific research and my judgment on the potential of scientific research talents, I believe that David Jianjia Liu has performed exceptionally well in terms of his scientific research practice ability, innovative thinking, and the practice of the scientific research spirit. It is believed that he is expected to achieve excellent results on the road of scientific research in the future and make outstanding contributions to the cause of environmental protection. I also believe that the Blue Wave Charity will continue to carry out high-quality lecture activities, making more and more people realize the necessity of participating in scientific and technological innovation and solving environmental problems.

刘简嘉带领他所创建的碧波公益社团积极走进各个学校开展环保科技类公益宣讲活动，在传播环保知识的同时，也激发更多青少年对科研的兴趣。基于我在环境科研领域多年工作的经验和对科研人才潜力的判断，我认为刘简嘉同学无论是科研实践能力、创新思维，还是对科研精神的践行，都表现的十分突出。相信他未来在科研道路上有望取得优异的成绩，为环保事业作出杰出贡献。我也相信碧波公益社团一定会持续的开展高质量的宣讲活动，让越来越多的人意识到参与科技创新和解决环境问题的必要性。

Signature 签名:

Yuqin Song 宋豫秦

Professor and Doctoral Supervisor, College of Environmental Sciences and Engineering, Peking University; Deputy Director, Committee for the Care of the Next Generation, Peking University; Standing Director, Chinese Society for Sustainable Development; and has served as a judge for the environmental discipline in multiple sessions of the China National Youth Science and Technology Competition

北京大学环境科学与工程学院教授、博士生导师，北京大学关心下一代工作委员会副主任，中国可持续发展研究会常务理事，曾担任多届全国青少年科技竞赛环境学科评委

As one of the school's relevant responsible persons, I have witnessed the growth and progress of David Jianjia Liu and his Blue Wave Charity. Whether it is the science and technology festival activities that the Blue Wave Charity has participated in at our school or the various popular science lectures carried out in other schools, they have set an excellent example and provided inspiration for other students, sowing the seeds of ecological cognition in the hearts of more students and igniting their yearning for scientific exploration. His efforts and dedication have not only made important contributions to the protection of natural resources and the publicity of popular science, but also brought honor to the school. He and his Blue Wave Charity not only embody the sense of social responsibility of young people in the new era, but also show the positive spiritual outlook of the students in our school, making our school shine in the field of environmental protection popular science, setting a value benchmark for students, integrating the enthusiasm of youth with social responsibility, and protecting nature with knowledge and actions.

作为学校相关负责人之一，我见证了刘简嘉同学和他的碧波公益社团的成长和进步。不论是碧波公益社团在我校参与的科技节活动，还是在其他学校开展的各类科普宣讲活动，都给其他学生带来了极好的示范与启示作用，碧波公益社团在更多学生心中播撒生态认知种子，点燃他们心中对于科学探索的向往。他的努力和付出不仅为自然资源的的保护和科普宣传做出了重要贡献，也为学校赢得了荣誉。他和他的碧波公益社团不仅体现了新时代青年们的社会责任感，也展现了我校学生们积极向上的精神风貌，让我校在环保科普领域闪光，也为学生树价值标杆，让青春热忱与社会责任相融，以学识行动守护自然。

Signature 签名:

Zhen Yin 尹振

A teacher at Shandong Experimental High School, who has been responsible for multiple public welfare or charity-related activities and associations within the school

山东省实验中学教师，负责了多个公益相关的活动和社团在山东省实验中学校内的开展

David Jianjia Liu, president of the Blue Wave Charity, and his team members have shown serious thinking, hard work and modesty in their work. They are not afraid of failure, actively explore, and uphold a strong sense of social responsibility, taking ecological environmental protection as their own duty, thus demonstrating the unique social influence of the younger generation. Their popular science lectures, which combine professionalism and interest, have popularized natural science knowledge to the public in a simple and clear way, and also profoundly clarified the necessity of protecting the environment.

碧波公益社团的社长刘简嘉及团队成员在工作中认真思考、刻苦努力、虚心请教，既不怕失败、nexplore，又秉持强烈的社会责任心，以生态环境保护为己任，展现出青年一代独特的社会影响力。他们的科普讲座兼具专业性与趣味性，通俗简明地向公众普及了自然科学知识，也深刻阐明了保护环境的必要性。

Signature 签名:

Lihui Huang 黄理辉

Professor at Shandong University, Doctoral Supervisor, Deputy Director of the Institute of Ecological and Environmental Damage Appraisal of Shandong University, Technical Expert for Ecological and Environmental Public-interest Litigation of the Procuratorial Organs, Expert for the Review of Soil Pollution Prevention and Control of Construction Land

山东大学教授，博士生导师、山东大学生态环境损害鉴定研究院副院长、全国检察机关生态环境公益诉讼技术专家、山东省建设用地土壤污染防治评审专家

David Jianjia Liu and the Blue Wave Charity he initiated have actively promoted the protection of natural resources and the publicity of popular science from multiple dimensions, making important contributions to improving the water environment, enhancing the public's environmental awareness and young people's awareness of scientific innovation. As a member of the Shandong Youth Federation and a person with rich experience in public welfare and entrepreneurship, I deeply understand the importance and value of teenagers' participation in public welfare undertakings. The Blue Wave Charity has performed exceptionally well in terms of its innovation, practical achievements and positive impact on society.

刘简嘉和他发起的碧波公益社团，从多个维度积极推动自然资源的保护和科普的宣传，为改善水环境、提升公众环保意识和青年科学创新意识做出了重要贡献。作为山东省青联委员、在公益和创业领域有着丰富经验的一员，我深知青少年参与公益事业的重要性和价值。碧波公益社团无论是在社团的创新性、实践成果，还是在对社会的积极影响方面，都表现的十分出色。

Signature 签名:

Yong Wang 王勇

Model of Charity of the 12th China Charity Awards, Ministry of Civil Affairs of the PRC, Recipient of China Youth May Fourth Meda

中华人民共和国民政部第十二届中华慈善奖慈善楷模、中国青年五四奖章获得者