Valley Spring Sales Brochure: Site Plan and Floor Plans valley-spring-@-yishun.pdf   HDB Valley Spring @ Yishun and Flying Star Feng Shui Block 478C Stacks #175 & #177 = E1 Block 478A Stacks #101 & #103 = S3 Block 478B Stacks #127 & #129 = N2 Block 479B Stacks #33 & #35 = NW3