What does Guanghua mean in the poem "White Birch"?

Birch Tree is a lyric poem by the famous Russian poet Ye Saining. The poem takes birch as the central image and describes its beauty from different angles. Snowflakes, embroidered lace and white tassels are crystal clear in the morning glow, covered with silver frost and blooming with flowers, showing a noble beauty. The birch tree in the poem is full of color changes and movement.

At my window,

There is a birch tree,

As if covered with silver frost,

Covered with snowflakes.

Furry branches,

The lace of snow embroidery is very chic.

Strings of flowers are in full bloom,

White tassels are picturesque.

In the dim silence,

Yuli this birch tree,

In the flashing golden light

Sparkling snowflakes.

Birch trees wander around.

Sunset,

It turned to the snowy branches.

Another layer of silver brilliance.