diff --git a/content/blog/today-project/index.md b/content/blog/today-project/index.md
new file mode 100644
index 0000000..31db020
--- /dev/null
+++ b/content/blog/today-project/index.md
@@ -0,0 +1,9 @@
+$$
+f(a)=f(b)
+$$
+
+okay
+
+$$
+a^2 - b^2 = (a+b)(a-b)
+$$