For example ,Copy from a syned node or sync a block from a assigned node that is in a local network。
The dominating factor in chain sync latency is the time to validate the chain, not to fetch it.
One idea is to copy the filecoin directory from a trusted synced node to a new one. Nothing in theory prevents this, but there appears to be some practical thing that means it doesn’t work right now. We’d welcome a contribution to address it.
You could replace the bootstrap node addresses in configuration with nodes that are local to you, but this won’t meaningfully speed up chain syncing.