diff --git a/README.md b/README.md
index 55e9724..73b53f4 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Superteam Dao Dapp
 
-Superteam dao contract is a Bounty log proof of work onchain.
+Superteam dao dapp is a Bounty log proof of work onchain.
 
 | Program                                                    | Devnet | Mainnet Beta |
 |------------------------------------------------------------|--------|------------- |
@@ -39,6 +39,5 @@ solana logs
 ### Documents
 - [Getting started](/docs/GETTING_START.md)
 - [Tech ecosystem](/docs/TECH_ECOSYSTEM.md)
-- [Writing tests](/docs/WRITING_TEST.md)
-- [Editor](/docs/EDITOR.md)
+- [Writing tests](/tests/superteam-dao-contract.ts)
 - [Deployment](/docs/DEPLOYMENT.md)
diff --git a/docs/TECH_ECOSYSTEM.md b/docs/TECH_ECOSYSTEM.md
new file mode 100644
index 0000000..f411322
--- /dev/null
+++ b/docs/TECH_ECOSYSTEM.md
@@ -0,0 +1,16 @@
+# Tech ecosystem
+
+## Tech stack
+
+### Core
+
+- [x] [Rust](https://www.rust-lang.org/)
+- [x] [Typescript](https://www.typescriptlang.org)
+- [x] [Anchor](https://www.anchor-lang.com/)
+
+## Basic Building Blocks
+### Rust and Anchor
+Solana supports writing on-chain programs using the Rust programming language.
+Anchor is a framework for Solana's Sealevel runtime providing several convenient developer tools for writing smart contracts.
+### Typescript
+When we created this project using the Anchor framework, it generated a tests/programs.ts file. So we use typescript to write test file for contract.
\ No newline at end of file