Congratulations to my mother on her 60th birthday! We are delighted to invite you and your family to join us for a celebratory lunch at our Liu's Big Yard in Shengtang Town on February 17th (Lunar New Year's Eve). A simple yet delicious meal will be prepared, and we look forward to sharing this joyous occasion with you. Please RSVP by [date] so we can make the necessary arrangements.