Where does “soojus” come from?

soojus (Estonian) comes from Estonian soe, from Proto-Finnic sooja, from Russian со́я, from Dutch soja, from Japanese そい, from Japanese 醤油, from Middle Chinese 醬油, from Middle Chinese 醬 — bean paste.

soojus (Estonian): warmth, heat

Definitions

warmth, heat

Ancestry of “soojus”, step by step

Step	Language	Word	Meaning
1	Estonian	soe	warm; genitive singular of susi
2	Proto-Finnic	sooja	shelter; protection; warm
3	Russian	со́я	jay {{i\|dialectal}}
4	Dutch	soja	soy
5	Japanese	そい	醤油 soy sauce
6	Japanese	醤油	soy sauce
7	Middle Chinese	醬油	—
8	Middle Chinese	醬	bean paste

Every word from Middle Chinese 醬 →Every word from Middle Chinese 醬油 →Every word from Japanese 醤油 →