In the deep of night, the night tour of the da Vinci exhibition has just begun.

Preti enjoys visiting the museum at night. Meditation, infinite reverie, seems to quiet down thoughts, can travel through hundreds of years ago, dialogue artists.

The story we shared began on a night in Milan in 2015, at 9pm local time.

Especially in time for Expo Milano, because in the Grand Palais there is a rare Da Vinci exhibition that captures the essence of the world's museums.

Looking at sketches, drawings of construction machinery,

As Da Vinci himself said, he had so many "secrets" in his head that he almost overflowed.

This secret is like knowing God's treasure house,

So that he explored every field endlessly, caught a glimpse of inspiration, and quickly and repeatedly wrote the idea back on the paper with his left hand.

Many of his manuscript inventions were later proven to be manufacturable, hundreds of years ahead of the world at the time.

Yes, the age of 500 years ago, is unable to catch up with his footsteps.

Another of Preti's favourites is "La Belle Ferronnière ", a portrait of La Belle Ferronniere.

An oil painting comparable to the Mona Lisa.

Presumably a carefully observed depiction of the character from different angles,

So that we can feel the real movement of the figures when we look at them.

According to the research, did Leonardo deliberately conceal the portrayal of the woman's abdomen because she was pregnant with her lover Ludovico's child?

Is this woman the same person as the painting of the woman with an ermine in Poland? Is she Cecilia Gallerani?

His paintings always conceal many secrets and symbols.

Mysterious, surprising, and intriguing.

Behind every painting, there seems to be a detail and a story that startles us.

Probably why Bill Gates loves him so much today.

The 21st century, indeed, belongs to da Vinci.

Yes, we can never tire of Leonardo da Vinci, the genius who dreamed of the future five centuries ago.

Preti's original article

Photograph: Palazzo Reale di Milano@Milano