Our deepest condolences to Professor Kongjian Yu's family, colleagues, and friends for his sudden and tragic departure. We will all remember him as a kind person, as a teacher, a professional, and a researcher who made our world greener and better.

All our landscape architecture colleagues and their students from around the globe will remember Kongjian and continue his mission to make our landscapes livable and in harmony with nature.

We will always remember Kongjian’s brilliant presentation at the IFLA 52 Congress in St. Petersburg in 2015, which was very inspirational.

I was honoured to work with Dr. Yu on the competition for the concept of Zaryadye Park in Moscow in 2013. This proposal was an eye-opener on revolutionary Kongjian’s vision of wetlands and the Sponge City.

Just a month ago, we enjoyed Kongjing’s presentation at the IFLA 61 Congress in Nantes.  It was an excellent speech.

Professor Kongjian Yu will Always Be Remembered.

Sincerely,

Maria Ignatieva and colleagues from URBIO,  the International Network “Urban Biodiversity and Design, and St. Petersburg State Forest Technical University

Dr. Maria Ignatieva

Professor of Landscape Architecture

译文：

我们对俞孔坚教授的家人、同事和朋友致以最深切的哀悼，他的突然离世令人痛心。我们都会铭记他是一位善良的人，是一位教师、专业人士和研究者，他让我们的世界更加绿色、更加美好。

全球各地的景观设计界同仁及其学生们都将铭记孔敬宇教授，并继续他让我们的景观宜居且与自然和谐相处的使命。

我们永远会记得孔敬宇教授在2015年圣彼得堡举办的第52届国际风景园林师联合会大会上的精彩演讲，那是一场极具启发性的演讲。

我深感荣幸能在2013年莫斯科扎里亚季耶公园概念竞赛中与俞孔坚博士合作。这一方案让我们看到了孔敬宇博士对湿地和海绵城市理念的革命性视野。

就在一个月前，我们还聆听了俞孔坚教授在南特举办的第61届国际风景园林师联合会大会上的演讲，那是一场精彩的演讲。

俞孔坚教授将永远被铭记。

此致

敬礼，

Maria Ignatieva 及来自“城市生物多样性与设计”国际网络（URBIO）和圣彼得堡国立林业技术大学的同事们

Maria Ignatieva 博士

风景园林学教授