It can hinder a child, but that's about it. This is a shoji screen, which is a type of Japanese sliding door. They're typically covered with thin paper, so, you know, an adult can go through it but a child would be hindered by it.

Shoji are made of thin paper stretched across a wooden lattice frame. They're lightweight and designed to let in some natural light.

This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well. The 子 is changed from し to じ, though, so be careful.