In a small bowl, combine the rest of the salt, soy sauce, vinegar, sugar and chili pepper flakes. Stir well but don’t worry if the sugar and salt don’t melt totally - they will melt once you mix this with the vegetables. Put the combined sauce in the large bowl with the cucumber and pear, scraping out any unmelted sugar and salt. Mix very well. Cover, and let rest for at least an hour or overnight in the refrigerator. It will keep tightly covered for a week.