Why can't you hold a Bitcoin short position?

Because when your margin is sufficient,
your long position's liquidation price can be zero, and you won't get liquidated.

But your short position will always have a liquidation price.
Even if your liquidation price is 500,000 or 1,000,000,

Over 10 or 20 years for Bitcoin, it will always come.

<Auntie's singing is so good, she must be reminiscing about her first love, Lao Deng>