亲眼 (qīn yǎn): with one's own eyes; personally

I saw that famous painting with my own eyes at the museum, and it was even more stunning than in photos.

The police said that to confirm whether that person is a thief, someone must have seen him steal with their own eyes.

Although the news reported the devastation of the earthquake, only those who witnessed it with their own eyes can truly understand that fear.

He watched the little sapling he planted grow taller day by day with his own eyes, and his heart was filled with a sense of accomplishment.

If you don't believe what I said, go to the scene and see it with your own eyes; then you should feel reassured, right?