diff --git a/CIPs/cip-142.md b/CIPs/cip-142.md
index 8baefd9..760afed 100644
--- a/CIPs/cip-142.md
+++ b/CIPs/cip-142.md
@@ -1,6 +1,6 @@
 ---
 CIP No.: 142
-Title: Transient storage opcodes
+Title: Transient Storage Opcodes
 Author: Chenxing Li (@ChenxingLi)
 Status: Draft
 Type: Spec Breaking
diff --git a/CIPs/cip-143.md b/CIPs/cip-143.md
new file mode 100644
index 0000000..82165d7
--- /dev/null
+++ b/CIPs/cip-143.md
@@ -0,0 +1,42 @@
+---
+CIP No.: 143
+Title: MCOPY (0x5e) Opcode for Efficient Memory Copy
+Author: Chenxing Li (@ChenxingLi)
+Status: Draft
+Type: Spec Breaking
+Created: 2023-05-15
+Required CIPs: 141
+---
+
+## Simple Summary
+Introduce the `MCOPY (0x5e)` instruction for efficient memory copy.
+
+## Abstract
+Introduce the `MCOPY (0x5e)` instruction as [EIP-5656](https://eips.ethereum.org/EIPS/eip-5656).
+
+## Motivation
+Currently, the Solidity compiler generates bytecode for the newest EVM by default, which has activated EIP-5656 in the Cancun upgrade. Supporting this opcode can achieve maximum compatibility with Ethereum.
+
+## Specification
+Same as [EIP-5656](https://eips.ethereum.org/EIPS/eip-5656).
+
+## Rationale
+N/A
+
+## Backwards Compatibility
+This CIP is Spec Breaking.
+
+## Test Cases
+<!--Test cases for an implementation are mandatory for CIPs that are affecting consensus changes. Other CIPs can choose to include links to test cases if applicable.-->
+N/A
+
+## Implementation
+<!--The implementations must be completed before any CIP is given status "Final", but it need not be completed before the CIP is accepted. While there is merit to the approach of reaching consensus on the specification and rationale before writing code, the principle of "rough consensus and running code" is still useful when it comes to resolving many discussions of API details.-->
+N/A
+
+## Security Considerations
+<!--All CIPs must contain a section that discusses the security implications/considerations relevant to the proposed change. Include information that might be important for security discussions, surfaces risks and can be used throughout the life cycle of the proposal. E.g. include security-relevant design decisions, concerns, important discussions, implementation-specific guidance and pitfalls, an outline of threats and risks and how they are being addressed. CIP submissions missing the "Security Considerations" section will be rejected. a CIP cannot proceed to status "Final" without a Security Considerations discussion deemed sufficient by the reviewers.-->
+N/A
+
+## Copyright
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).
\ No newline at end of file
diff --git a/README.md b/README.md
index 84f7f9f..0cc15de 100644
--- a/README.md
+++ b/README.md
@@ -52,6 +52,8 @@ These CIPs are primarily aimed at following EIPs to maintain compatibility with
 | :-----: | :----- | :-----: |
 | [23](CIPs/cip-23.md) | Hashing and Signing Typed Structured Data | [EIP-712](https://eips.ethereum.org/EIPS/eip-712)
 | [119](CIPs/cip-119.md) | `PUSH0 (0x5f)` Instruction | [EIP-3855](https://eips.ethereum.org/EIPS/eip-3855)
+| [142](CIPs/cip-142.md) | Transient Storage Opcodes | [EIP-1153](https://eips.ethereum.org/EIPS/eip-1153)
+| [143](CIPs/cip-143.md) | `MCOPY (0x5e)` Opcode for Efficient Memory Copy  | [EIP-5656](https://eips.ethereum.org/EIPS/eip-5656)
 | [1820](CIPs/cip-1820.md) | Migrate ERC1820 to Conflux | [EIP-1820](https://eips.ethereum.org/EIPS/eip-1820)
 
 
@@ -76,9 +78,12 @@ These CIPs are either in the midst of active development or have been fully deve
 | [131](CIPs/cip-131.md) | Retain Whitelist on Contract Deletion | Developed |
 | [132](CIPs/cip-132.md) | Fix Static Context Check for Internal Contracts | Developed |
 | [133](CIPs/cip-133.md) | Enhanced Block Hash Query | Developed |
-| [136](CIPs/cip-136.md) | Increase PoS Retire Period | Draft |
-| [137](CIPs/cip-137.md) | Base Fee Sharing in CIP-1559 | Draft |
-| [1559](CIPs/cip-1559.md) | Fee market change for Conflux | Draft |
+| [136](CIPs/cip-136.md) | Increase PoS Retire Period | Developed |
+| [137](CIPs/cip-137.md) | Base Fee Sharing in CIP-1559 | Developed |
+| [141](CIPs/cip-141.md) | Disable Subroutine Opcodes | Draft |
+| [142](CIPs/cip-142.md) | Transient Storage Opcodes | Draft |
+| [143](CIPs/cip-143.md) | `MCOPY (0x5e)` Opcode for Efficient Memory Copy | Draft |
+| [1559](CIPs/cip-1559.md) | Fee market change for Conflux | Developed |
 
 ### Activated