Do you know the basic principles of how to choose erhu strings?

1, stainless steel erhu string-iron-carbon alloy with nickel and chromium (both elements are not easy to oxidize), which is not easy to oxidize and has poor rigidity;

2, silver erhu strings-high silver content, not easy to oxidize, and the rigidity is ok;

3. Ordinary erhu string-made of ordinary iron-carbon alloy, which is easy to oxidize and has good rigidity;

4. High-strength erhu string-made of iron-carbon alloy containing manganese and silicon, which is easy to oxidize and has the best rigidity.