Discord bot doesn't check the messages. What's wrong?

[Marcee]

import os
import discord
my_secret = os.environ['TOKEN']
client = discord.Client()

@client.event

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

async def on_message(message):
  
  if message.author == client.user:
    print('message checked, denied')
    return
  
  if message.content.startswith(';hello'):
    print('message checked')
    await message.channel.send('hello!')

client.run(os.getenv('TOKEN'))

[shizuka]

We need to remove an empty line between the function and the decorator (this is better read) and add to the second function of the decorator (and this is already mandatory).

@client.event
async def on_ready():
    # ...
@client.event

async def on_message(message):

# ...

Is that all? I believe https://discordpy.readthedocs.io/en/latest/quickstart.html which is like yours, yes, everything.