Lingnan uses Cantonese as medium of instruction in their nursery. English used only in their upper Kindergarten. Lingnan's campus quite good/ clean and teacher nice and caring. Lingnan uses a more routine appraoch to teaching. Everyone does the same thing at the same time.
Victoria uses English as medium of instruction. They have putong hua too. I only visited the Belcher's campus so no comment on the campus facilities. In Victoria, kids in the class are divided into groups and does different thing even though they belong to the same class.
Cheers.