Heres the translation in English, preserving the HTML format:
```html
Xdef Finance is an elastic synthetic index fund whose value is calculated at a ratio of Defi TVL x 0.1^11. Traders can speculate on Defi Tvl with one token. Hedge Defi. The Xdef protocol automatically adjusts supply based on demand. When the price is high, wallet balances increase. When the price is low, wallet balances decrease.
```
