Tough job
![Workers clean the window of Lotte Tower, Korea’s tallest building, in Jamsil, southern Seoul, on Tuesday. According to Lotte, it takes roughly 700 hours, or 90 days, to clean the whole building. [YONHAP]](https://koreajoongangdaily.joins.com/data/photo/2020/06/09/abe49073-cc67-4c0d-ac6a-986e283e33d4.jpg)
Workers clean the window of Lotte Tower, Korea’s tallest building, in Jamsil, southern Seoul, on Tuesday. According to Lotte, it takes roughly 700 hours, or 90 days, to clean the whole building. [YONHAP]
Monday
January 20, 2020
Monday
Gangnam-gu, South Korea
Fine Dust :
with the Korea JoongAng Daily
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