BNB rose all the way to the moon becoming the third-largest cryptocurrency by market cap. It's now valued at over $230 per coin, becoming one of the most valuable smart contract platforms in the world after Ethereum. While BNB doesn't come nowhere near close as Ethereum in terms of decentralization, and censorship-resistance, it works great for "De-Fi" with its ultra-low fees and blazing-fast transaction confirmation times.
Binance and Binance Smart Chain give people alternative options, chains to move their coins, tokens with lower, much lower, very cheap transaction fees. The contribution is used to shill Binance and BNB and people have more belief in the future of Binance, BNB. Price has risen a lot because of contributions, belief and manipulation.Quote
I'm wondering what could've lead Binance Coin towards new heights within such a short amount of time? Does the "De-Fi" hype have to do anything about this? Do you think BNB's current prices are sustainable or not? Your input will be greatly appreciated. Thanks. 
DeFi hype can contribut indirectly. Binance list loads of DeFi tokens on their exchange and as classic rule for capital flow, people will move their capital from bitcoin to old altcoins, new altcoins and DeFi tokens. When they get big profit from DeFi tokens, they are more flexible to accept high price from other assets exclusively BNB.