A rainbow appears in the sky after rainfall in Bangkok, Thailand, Feb. 17, 2019. The rainfall helped to improve the air quality in Bangkok. (Xinhua/Zhang Keren)
A rainbow appears in the sky after rainfall in Bangkok, Thailand, Feb. 17, 2019. The rainfall helped to improve the air quality in Bangkok. (Xinhua/Zhang Keren)
The photo shows King Power MahaNakhon skyscraper under a clear sky after rainfall in Bangkok, Thailand, Feb. 17, 2019. The rainfall helped to improve the air quality in Bangkok. (Xinhua/Zhang Keren)
The photo shows King Power MahaNakhon skyscraper in sunset after rainfall in Bangkok, Thailand, Feb. 17, 2019. The rainfall helped to improve the air quality in Bangkok. (Xinhua/Zhang Keren)
The photo shows King Power MahaNakhon skyscraper under a clear sky after rainfall in Bangkok, Thailand, Feb. 17, 2019. The rainfall helped to improve the air quality in Bangkok. (Xinhua/Zhang Keren)
The photo shows King Power MahaNakhon skyscraper under a clear sky after rainfall in Bangkok, Thailand, Feb. 17, 2019. The rainfall helped to improve the air quality in Bangkok. (Xinhua/Zhang Keren)
The photo shows King Power MahaNakhon skyscraper in sunset after rainfall in Bangkok, Thailand, Feb. 17, 2019. The rainfall helped to improve the air quality in Bangkok. (Xinhua/Zhang Keren)