Indian Prime Minister Narendra Modi went to collect garbage on Saturday from a picturesque beach resort where he receives Chinese President Xi Jinping for talks at the summit.
Modi and Xi meet in the southern city of Mamallapuram, home to centuries-old wind-swept temple monuments, but also popular with tourists for surfing on their perfect waves.
But Modi released a video of himself doing plogging, an activity in which runners combine their run or walk with garbage collection, on the beach in front of their luxury resort early on Saturday.
He collected plastic bottles, in which he declared war, as well as banana skins and other garbage in a large plastic bag, while the waves reached the shore in his last effort to highlight the lack of cleanliness in public places in India .
"Plogging on a beach in Mamallapuram this morning. It lasted more than 30 minutes. I also gave my collection to Jeyaraj, who is part of the hotel staff," he wrote on Twitter.
"Let's make sure our public places are clean and tidy! Let's also make sure we stay fit and healthy."
Indian cities have some of the highest levels of air pollution in the world, but they are also among the dirtiest with lots of garbage in major centers like Delhi and Mumbai due to rapid urban growth and poor governance.
Modi has called for an end to the consumption of single-use plastics by 2022.
Concerns are growing worldwide about plastic pollution, especially in the oceans, where almost 50 percent of single-use plastic products end up, killing marine life and entering the human food chain, studies have shown .
Modi made a personal tour of the Xi of the Shore Temple, dating from the 7th and 8th century and other ancient monuments that are part of Unesco's world heritage and that were emptied of all visitors for the two-day summit.