Discord.py机器人消息传递通道问题

import discord

client = discord.Client()

@client.event
async def on_ready():
    print('Logged in as {0.user}'.format(client))

client.run('your_token_here')

@client.event
async def on_message(message):
    if message.author == client.user:
        return

    if message.content.startswith('$hello'):
        await message.channel.send('Hello!')

client.run('your_token_here')

@client.event
async def on_message(message):
    if message.author == client.user:
        return

    if message.content.startswith('$send_message'):
        target_channel_id = 1234567890  # 替换为目标频道的ID
        target_channel = client.get_channel(target_channel_id)
        if target_channel:
            await target_channel.send('This is a message from another bot!')

client.run('your_token_here')