On 27th April 2019, a public welfare event themed as “Let’s Sing Together” was held in Kunshan headquarters of Lei Shing Hong Machinery. The event is jointly organized by Shanghai Mei’ai Integration Center of Art & Public Welfare Development, Caterpillar and Lei Shing Hong Machinery. After over one month of planning and preparation, a group of 23 visually impaired people from Mei’ai Integration Centre and more than 30 volunteers from Caterpillar and Lei Shing Hong share the world of each other and get along well in harmony through listening and heart-to-heart communication.