Professor Yu, I would like to express with deep sorrow and utmost respect how greatly I admired you, how your projects opened new horizons for landscape architects in Turkey, and that your place will be irreplaceable.

Many years ago, when our students from Istanbul Technical University's Landscape Architecture Department visited Houtan Park in Shanghai, you generously opened your office to us. Whenever I tried to reach you by email, you would respond immediately- what a humble and caring attitude！

Your projects, of enormous quality and international recognition, stood as a model of humility and integrity. This was a loss that comes too early, and I am deeply saddened

译文：

俞教授，怀着深切的悲痛与崇高的敬意，我谨表达对您无比的钦佩之情——您为土耳其景观设计师开拓的全新视野，以及您无可替代的地位。

多年前，伊斯坦布尔理工大学景观建筑系师生参访上海后滩公园时，您慷慨地敞开办公室接待我们。每当我通过邮件联系您，总能得到即时回复——这般谦逊体贴的品格令人动容！

您那些享誉国际的杰出作品，不仅是专业领域的典范，更彰显了您高尚的人格魅力。这场离别来得太早，我深感痛惜。