Quanhua-Guan

import { ethers } from "ethers";
import {
    FlashbotsBundleProvider,
    FlashbotsBundleResolution,
} from "@flashbots/ethers-provider-bundle";

//const GWEI = 10n ** 9n;
const CHAIN_ID = 1;//11155111; // goerli测试网，如果用主网，chainid 改为 1

// 1. 普通rpc （非flashbots rpc）