"Actually, I don't think so," he says smiling. "Maybe they say that because I make them do their homework and check the work carefully."
After work, the Briton is also an enthusiastic volunteer in the city.
He takes parts in charity bazaars, and also can be seen waving a small red flag on Suzhou's streets to direct traffic and persuade pedestrians and cyclists not to run red lights.
"Well, to some extent, it works," Coyle says. "I guess most people stop to look to see why a foreigner is waving a funny flag," he reasons.
Coyle also loves to take part in Chinese festivals.
"For a foreigner, these are always a good opportunity to learn about the country's history and culture," he says.
He is also sports-mad, playing football and taking part in community events, such as tug-of-war.
"It helps people mix and make new friends," he says.
Coyle is goalkeeper for the Ganesh Indian Football Team and also played for local Chinese team Fei Long - Flying Dragon - for a few years.
"It was great to be in the football team because they soon forgot you were a foreigner, you were a teammate instead," he says.
In his time in Suzhou, Coyle has witnessed many changes.
"The Metro has been built up; the ring roads constructed; and more people have cars," he says.
"Ten years ago, we had to go to Shanghai for a cup of coffee, but now Suzhou has numerous cafes," he says. "The city is changing for the better, and I believe in 10 years time we will have seen many more improvements."
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