EATING NOODLES ON BIRTHDAY FOR LONGEVITY

When I celebrate my birthday I would usually eat a bowl of noodles as it is auspicious.  Why?  It is believed that the long strands of noodles symbolise longevity. 
There is actually a dish called Longevity Noodles or 长寿面 “Chang Shou Mian”.  However, I just made do with the Prawn Mee above at a Hawker Centre on my birthday.  By the way, one tries not to break the noodles using the chopsticks or teeth, but have to chew on them once inside the mouth.