If children haven't mastered 26 letters, have no sense of phoneme, or don't have enough listening vocabulary as the basis, for them, learning natural spelling is actually from "memorizing phonetic symbols" to "memorizing spelling rules". Even if they can effectively read many words, they still don't know what it means.

English has 26 letters and 44 phonemes. The correspondence between these letters (and letter combinations) and phonemes needs children to feel and accumulate repeatedly in constant reading and listening and speaking applications before they can master them. This is a process that takes some time. Even in the United States, natural spelling is generally from K to G3 (preschool to third grade).

Therefore, children need to learn natural spelling step by step, and don't expect it to happen overnight.

The specific situation can be seen in Peiwen Foreign Language. They teach well there. Let's go to Baidu.