Obtain Price Through Cross-Chain

Cumulus was used to test different pallets across the chain Compile and launch relay chain

## compile

git clone -b release-v0.9.9 https://github.com/paritytech/polkadot

cd polkadot

cargo build --release

## Export the chain configuration file

./target/release/polkadot build-spec --chain=rococo-local --disable-default-bootnode --raw > rococo-local.json

## Run two nodes

./target/release/polkadot --name alice --chain rococo-local --alice -d ./data/alice --ws-external --rpc-external --rpc-cors all  --node-key 0000000000000000000000000000000000000000000000000000000000000001

./target/release/polkadot --name bob --chain rococo-local --bob -d ./data/bob --bootnodes /ip4/127.0.0.1/tcp/30333/p2p/12D3KooWEyoppNCUx8Yx66oV9fJnriXwCcXwDDUA2kj6vnc6iDEp

Download the cross-tray test code

git clone https://github.com/aresprotocols/mars.git

git checkout bridge

# Compile

cd mars

cargo build 

# Export genesis state and wasm files

./target/debug/polkadot-collator export-genesis-wasm > genesis-wasm

./target/debug/polkadot-collator export-genesis-state --parachain-id 2000 > genesis-state-2000

./target/debug/polkadot-collator export-genesis-state --parachain-id 2001 > genesis-state-2001

# Activate two parallel chains

RUST_LOG=runtime=debug ./target/debug/polkadot-collator -d ./data/alice --collator --alice --force-authoring --port 40557 --ws-port 9951 --parachain-id 2000 --ws-external --rpc-cors all --rpc-methods=unsafe -- --execution wasm --chain ../polkadot/rococo-local.json --port 40558 --bootnodes /ip4/127.0.0.1/tcp/30333/p2p/12D3KooWEyoppNCUx8Yx66oV9fJnriXwCcXwDDUA2kj6vnc6iDEp

RUST_LOG=runtime=debug ./target/debug/polkadot-collator -d ./data/bob --collator --bob --force-authoring --port 40777 --ws-port 9971 --parachain-id 2001 --ws-external --rpc-cors all --rpc-methods=unsafe -- --execution wasm --chain ../polkadot/rococo-local.json --port 40778 --bootnodes /ip4/127.0.0.1/tcp/30333/p2p/12D3KooWEyoppNCUx8Yx66oV9fJnriXwCcXwDDUA2kj6vnc6iDEp