How long is the couplet for writing calligraphy?

The shortest two words:

Part I: Ink;

Downlink: white.

The longest and most famous Daguanlou in Kunming is 180:

The first part: 500-mile Dianchi Lake, running to the fundus, draped on the shore, happy and boundless. Look at immortals in the east, ghosts and gods in the west, and go north.

It twists and turns, and Nanxiang is in vain. It is better to choose the winner than to board the board. Ride the crab island Luozhou, combing the package in the wind and fog; Gengpingtian

The reeds are dotted with some green feathers and Danxia. Don't live up to the surrounding fragrant rice, clear sand, September hibiscus and March willow.

The second part: the past of a thousand years, remember it in your heart, empty the wine and sigh who is the hero. I want to learn from China Ship, Tang Biao Iron Column and Song Hui.

Yuan kua leather bag. Wei Lie played an important role in moving mountains and rivers. Draw a bead curtain building, which can't be rolled up like dusk rain; stop

Remnants are paid to the pale smoke. Only won a few minutes, fishing in half a river, two rows of autumn geese and a pillow of frost removal.