A man named Chen was left astonished during his commute to work, as he spotted what appeared to be 'two suns' in the sky in southern China.

Riding on a shared bike, he decided to capture the breathtaking sight at around 7:10 am near the Jinzhou Road Station of Chengdu Metro Line 2 on July 18.

"I thought the sky was particularly beautiful at that moment, so I simply snapped a picture," Chen explained. From the image taken on his phone, two suns - one big, one small - are clearly visible. "It was too glaring to look at with the naked eye," he added.

Chen revealed that the unusual spectacle disappeared approximately 40 minutes later.

Some residents speculated that it was a sun dog, a rare atmospheric optical phenomenon. However, Zeng Yang, Vice President of the Sichuan Astronomical Science Popularization Association, and Ji Yun, a popular science expert studying rare celestial wonders, both denied this theory.

According to Zeng, the video does not show any high clouds or a large amount of ice crystals, which are necessary for the occurrence of sun dogs. Instead, Zeng suggests that the 'extra sun' may have been a lens flare caused by the flat field aberration of multiple lenses in the phone or a piece of glass in front of the lens.

The video was provided by Chen.

7月18日，四川成都，陈先生骑着共享单车在上班路上拍下“两个太阳”。
陈先生介绍，视频是18日上午7点10分左右在成都地铁2号线金周路站附近拍下的。“当时是觉得天空特别漂亮，就随手拍了下。”陈先生说，从手机拍摄的画面里，可以清楚地看到一大一小两个太阳同时出现，“肉眼看太刺眼了，看不清。”首次见到这种场景的陈先生觉得有些惊喜，“40分钟后，我再拍，就没看到了。”
同样在几天前，7月7日，四川宜宾，肖先生在日落时分也拍到有两个太阳。
为何会同时出现两个太阳？有市民猜测这是“幻日”。对此，四川省天文科普学会副会长曾阳以及研究罕见天象奇观的科普专家计云都表示否定。
“从视频来看，天空中没什么高云，也就没有大量冰晶存在，不符合幻日的条件。”曾阳猜测，这是玻璃等物品造成的炫光，“应该手机镜头前玻璃或镜头内多组镜片的平板像差导致的。”此前，四川宜宾市民拍到了云层中一前一后的“两个太阳”。“宜宾那个才是幻日。”四川省天文科普学会副会长曾阳介绍，幻日的出现，需要空中有足够多且能够透光的高云，高云中还要存在大量冰晶，“太阳高度也不能太高，而且需要从特别的角度才能观测。”（视频分别由陈先生和肖先生提供）