根据以下材料，回答
Mother Teresa once said, "Everytime you smile at someone, it is an action of love, a gift to that person, abeautiful thing." However a recent survey showed that 25% of Chinese neversmiled or smiled less than five times a day. It also found that 2% of Chinesewere willing to smile at strangers.
To make a change, forty students fromShanghai Normal University started a team of "Smiling Volunteers".Their first smiling task was to smile at all the visitors in the Shanghai FilmArt Centre and asked if they needed their help. Not all students found it easyto smile all the time. "When volunteers help other people, smiling is thebest way to make them understand that volunteers are ready and sincere."One team leader said.
A teacher in charge of the team thought theteam′s work was not all fun and games. "Most of our students will beteachers after they leave the university. Smiling is necessary for goodteachers. We hope they can learn how to smile at each other," she said.
Everyone smiles in the same language. Soit′s not important whether you are a teacher or not. After all, sincere smilingand helping hearts are the most important.如果你没有以一个微笑开始新的一天，那从现在开始，为了明天而进行练习也为时不晚。Remember "The world always looks brighter from behind asmile."
How many Chinese never smiled orsmiled less than five times a day?
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