Answer2:The old Yearn vaults can be accessed on either the v1.yearn.finance or v2.yearn.finance websites. The v1.yearn.finance website hosts the legacy vaults, which are the original vaults created before the launch of Yearn V2. The v2.yearn.finance website hosts the new vaults, which are the vaults created after the launch of Yearn V2. Both sites offer a variety of different vaults, each with their own unique set of features and strategies. It is important to note that the old vaults are no longer supported and may not be safe to use. Therefore, it is recommended to use the new vaults hosted on v2.yearn.finance for the best user experience and security.