In Memory of Professor Kon Jan Yu

The Russian scientific and professional community expresses its deepest condolences to the family, friends, and colleagues of Professor Kon Jan Yu, the founder of "Turenscape," who tragically perished in the plane crash.

The passing of Professor Kon is an irreplaceable loss to the global scientific community. He was a brilliant mind whose groundbreaking work has left an indelible mark on urban planning and environmental science. His introduction of the "sponge city" concept has revolutionized our approach to sustainable urban development, creating a legacy that will continue to guide future generations.

We, colleagues from Russia, share in the grief with our colleagues in China. Our thoughts are with everyone who knew and admired him.

In honor of his immense contributions, the Committee for Urban Improvement has decided to pay tribute to Professor Kon Jan Yu's memory with a minute of silence during the upcoming conference on the formation of a comfortable urban environment.

May his memory live on through his work and the cities he helped inspire.

《悼念俞孔坚教授》

俄罗斯科学与专业界谨向"土人设计"创始人俞孔坚教授的家人、朋友与同事致以最深切的哀悼——教授不幸在空难中罹难。

俞教授的陨落是全球科学界无法弥补的损失。作为一位才华横溢的学者，他在城市规划与环境科学领域留下的开创性成就将永远铭刻于世。其所提出的"海绵城市"理念彻底变革了可持续城市发展之道，这项遗产将持续指引后世前行。

我们作为俄罗斯同仁，与中国的同行们同感悲恸。所有曾受其启迪、蒙其激励的人们，此刻都与我们同在感怀之中。

为铭记其卓越贡献，城市改善委员会决定在即将召开的宜居城市环境建设大会上设立默哀环节，以致敬俞孔坚教授留下的精神遗产。

愿通过他的不朽著作与那些受其启迪而诞生的城市，让这份智慧与理想永续传承。