20岁时开始创业，40岁拥有16家中小型的企业，从建筑材料到澳大利亚国际学校都有涉及。沈锐华觉得应该把时间花在有意义的事情上去，比如说服务他人，于是他选择了人们忽视的领域——厕所。1988年成立新加坡厕所协会，成功说服政府拿出400万新币的预算，资助咖啡店等场所改善厕所条件。也推动了建筑规范的修改，为女厕提供更多蹲位，进而消除女性如厕排长队的现象。2001年成立世界厕所组织，从光杆司令到目前有8名员工，200多个会员单位，同时创办了每年一度的世界厕所峰会。在2005年创办了世界厕所学院，截至目前已经培训了数千名厕所领域的专家、清洁工以及培训师。无论是“世界厕所日”还是印度的清洁革命，都与世界厕所组织的努力有关。他说，“未来，我们希望将厕所文化打造成流行文化”。

People | Jack Sim, founder of World Toilet Organization -“We should spend time on more meaningful things.”

Jack Sim started his business when he was 20, and has had 16 small and medium enterprises 20 years later, in fields including building materials, international school in Australia and others. He holds the opinion that time should be spent on more meaningful things, such as severing people. Therefore, he chose a filed which was always ignored-toilet. Jack Sim founded Singapore Toilet Association in 1988, and then persuaded the government to use 4 million Singapore dollars to support public space such as coffee houses to improve their toilets. What's more, the association pushed to revise building codes, increasing the number of women's cubicles, which eliminates women's line for toilet. In 2001, Jack Sim founded World Toilet Organization and he is the only member in WTO. But now, there are 8 employees and more than 200 member units. Morevoer, WTO hosted the yearly World Toilet Summit. In 2005, Jack Sim founded World Toilet Institute. Till now several thousnds of toilet experts, cleaners and trainers were trained in the institute. From “World Toilet Day” to “Clean India” campaign, many changes about toilet are supported by WTO. Jack Sim said, "We hope that we can transform toilet culture into popular culture in the future.”