def byte_coding(string: str) -> str:
    """Byte encoding. The data is encoded in UTF-8 encoding.

    Args:
        string: A string consisting of any characters.

    Returns:
        Encoded binary string.
    """
    byte_list = []
    for byte in bytearray(string, 'utf-8'):
        byte = bin(byte)[2::].zfill(8)
        byte_list.append(byte)

    return ''.join(byte_list)