We should borrow some BTS to generate BitCNY with an collateral ratio of 5. The fees from the BitCNY and BitUSD can buy BTS and refund the borrowed BTS.
But what is the technical problem for not having enough BitCNY now? We need more FIAT/BitFIAT exchanges.
The problem is that each and every other coin is at least 10% undervalued on bitusd/bitcny pair.
That also means the 10% lower price on margin calls have no effect anymore since there is no possibility to buy cheap BTS on DEX to sell them on external exchanges with profit and to send the new coin back to DEX to buy bitcny/bitusd to eat the margin call quickly.
Since there is a leck of bitusd/bitcny liquidity prices of other coins are already 10% under market price and its impossible even when buying the 10% cheaper BTS from margin call to bring funds back to DEX with any profit.
In short words the feature of 10% lower margin call price has no effect at all because there is a lack of bitusd and bitcny.