How to make a bots greeting in a Telegram group chat?

Question

Chats

Good afternoon, tell me how to implement so that when a new member is added in a group chat, the message
Hello, {username}!
Welcome to chat
Let's get acquainted!
We currently have {number of members} in our chat

Answer 1

@bot.message_handler(content_types=["new_chat_members"])
def handler_new_member(message):
    user_name = message.new_chat_member.first_name
    bot.send_message(message.chat.id, "Добро пожаловать, {0}!".format(user_name))

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