The host of The Crypto Lark and crypto investor Lark Davis revealed that he believes that the five most promising projects in the Polkadot DeFi ecosystem may cause hype due to their high profit potential. The first is Acala, which has recently deployed a testnet and has received a lot of participation. Acala is a cross-chain, multi-collateralized and decentralized stable currency of the Polkadot ecosystem. The second is Ocean Protocol (OCEAN). Information is not only used for DeFi, Ocean takes it a step further. This can bring a lot of value to various industries. In particular, it can be used in information-intensive industries such as AI. The information may be the new oil. The third is Mantra DAO (OM), a decentralized autonomous organization. The partnership established by Mantra strengthens its ecosystem, including Band Protocol, Kava, Terra and Kira Network. The platform also provides 88% pledge rewards. The fourth is Rio DeFi (RFUEL). OKEx recently launched RFUEL. Rio will allow users to easily access DeFi using a fiat gateway and Rio wallet. The fifth is Polkastarter, a decentralized cross-chain exchange. His biggest investment was in Polkadot's native token DOT, and he expects that DOT may rise to $100 in the next few years, and its market value will reach $100 billion.