徐嘉怡，2001年10月生于法国。
8岁开始在上海开云电子官网学习书法，师从吴寒松校长。由《汉·张迁碑》隶书入手，后临摹王铎行书。七年的刻苦不倦，见证着嘉怡对书法这一中国传统文化艺术的浓厚兴趣和过人悟性，2015年通过上海书法家协会社会艺术水平考试书法7级，并在中国和世界一些国家和地区举行的书法竞赛中屡屡获奖：
获奖记录：
A/, 世界和平书画展
2011年台湾:优秀奖；2012年日本:银奖；2013年毛里求斯，金奖；2014年上海：铜奖； 2016年俄罗斯：银奖；
B/, 2014年：第一届中华少年杯中学生组书法类金奖；
C/, 2015年: 上海开云电子官网15周年临摹与创作书画展铜奖；
D/, 2016年: 赛墨宝杯全国小主人书法大赛优秀奖；
E/, 2016年：上海“翰墨缘和贵”中小学生迎春书法邀请赛入展；
F/, 2015年：苏州大运河美术馆收藏徐嘉怡一件书法作品；
G/, 2016年: 日本东京张统良古典书道学院收藏徐嘉怡一件书法作品；
H/, 2016年: 《徐嘉怡书法专辑》由上海水乡书画院《海派书画》出版；
XU Jiayi Celine, born in France in October 2001, started her practice in Chinese calligraphy in Shanghai when she was 8, under the direction of Mr. WU Hansong, President of Shanghai Limitless Arts School. With her hard and persistent efforts in copying calligraphy over 7 years, from the Official Script of Zhang Qian Tablet (Dynasty Han), to the Running Script of WANG Duo (Dynasty MING)-, Celine XU has demonstrated her strong interests and understanding ability about Chinese calligraphy, and obtained in 2015 her Grade 7 (out of 9), certificated by Shanghai Calligraphers Federation.
Performance and list of Rewards of the Competitions or Exhibition:
A/, The World Peace-Painting and Calligraphy Exhibition:
Honorable Mention (2011 Taiwan), Silver Medal (2012 Japan), Gold Medal (2013 Mauritius), Bronze Medal (2014 Shanghai), Silver Medal (2014 Russia);
B/, Gold Medal, The First National Young Cup of China 2014 (calligraphy, middle school students)；
C/, Bronze Medal, Painting and Calligraphy Exhibition, celebrating 15th Years of Shanghai Limitless Arts School, 2015;
D/, Honorable Mention, “Saimobao” National Young Cup of China, 2016；
E/, Nominated Reward, Shanghai “Hanmoyuanhegui” calligraphy competition, Spring 2016 (category of Primary & Middle School Students)；
F/, in 2015, one of the works of Celine XU collected by the Grand Canal Arts Gallery, Suzhou;
G/, in 2016: , one of the works of Celine XU collected by the Zhang Tongliang Calligraphy Institute, Tokyo, Japan;
H/, in 2016: “Calligraphy works of XU Jiayi Celine” published by the Shanghai Calligraphy Painting Institute Edition, “Shanghai Style” Commission.
