Tourists walk under mist at the Lingering Garden, one of the most famous Chinese classical gardens, in Suzhou, east China's Jiangsu Province, June 9, 2019. The classical garden in Suzhou has opened its intelligent spraying system to cool tourists in hot summer. (Photo: Xinhua)

Tourists walk under mist at the Lingering Garden, one of the most famous Chinese classical gardens, in Suzhou, east China's Jiangsu Province, June 9, 2019. The classical garden in Suzhou has opened its intelligent spraying system to cool tourists in hot summer. (Photo: Xinhua)

Tourists walk under mist at the Lingering Garden, one of the most famous Chinese classical gardens, in Suzhou, east China's Jiangsu Province, June 9, 2019. The classical garden in Suzhou has opened its intelligent spraying system to cool tourists in hot summer. (Photo: Xinhua)

Tourists walk under mist at the Lingering Garden, one of the most famous Chinese classical gardens, in Suzhou, east China's Jiangsu Province, June 9, 2019. The classical garden in Suzhou has opened its intelligent spraying system to cool tourists in hot summer. (Photo: Xinhua)

Tourists walk under mist at the Lingering Garden, one of the most famous Chinese classical gardens, in Suzhou, east China's Jiangsu Province, June 9, 2019. The classical garden in Suzhou has opened its intelligent spraying system to cool tourists in hot summer. (Photo: Xinhua)