Purchase Handkerchiefs via Carousell for my child, requires Hong Kong mobile phone number

I need assistance from someone based in Hong Kong who can purchase handkerchiefs from https://www.carousell.com.hk/p/%E3%80%90%E5%8C%85%E9%83%B5%E3%80%9110%E6%A2%9D%E8%A3%9D%E9%9F%93%E5%9C%8B%E7%B4%97%E5%B7%BE%E4%BB%94-235337392/?_branch_match_id=1505555832584869176&utm_source=share-native&utm_campaign=share-listing&utm_medium=sharing&_branch_referrer=H4sIAAAAAAAAA8soKSkottLXT04syi8tTs3J0UssKNDLyczL1k8JdvPyijIxzY1Isq8rSk1LLSrKzEuPTyrKLy9OLbJ1zijKz00FAAmuB2RAAAAA

Once purchased, the items will need to be sent to a South Korean address that I'll provide.

Standard packaging as provided by the seller is fine, so no special shipping arrangements are required.

To bid on project, describe the item in the link and also the price in Hong Kong dollars.