> For the complete documentation index, see [llms.txt](https://eigenphi-1.gitbook.io/head-first-defi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eigenphi-1.gitbook.io/head-first-defi/under-the-hood-of-the-defi-lego/whats-really-going-on-when-processing-liquidity-in-a-uniswap-pool/adding-liquidity..md).

# Adding Liquidity.

Let's look at [this add liquidity transaction](https://eigenphi.io/mev/eigentx/0x6fc42e9513ca3704ac388e1a8258c86d33b9e184d31e8ffd6fab2465f5ebfe4b?rankdir=TB) shown in EigenTx to understand what's happening.

The full token flow chart is here.

<figure><img src="/files/xFVEov2mwLVVYPWuJgu0" alt=""><figcaption></figcaption></figure>

Dive into the details.

<figure><img src="/files/n46VwMhTVynBldnEBKYY" alt=""><figcaption></figcaption></figure>

Steps 0, 1: You added USDC and WBTC to the pool.

<figure><img src="/files/CNk3tjQWYvkq2GC0QP42" alt=""><figcaption></figcaption></figure>

Step 2: The "virtualLiquidity," the virtual contract recording the total shares of the pool, minted a certain amount of "virtualLiquidity," to record your adding USDC & WBTC liquidity operation. Here, EigenTx uses "virtualLiquidity" as a voucher.

<figure><img src="/files/MVrP26NNT2geuAVocHoh" alt=""><figcaption></figcaption></figure>

Step 3: The double-entry bookkeeping demands that once a record is added, another record must be added to balance the balance sheet. After step 2, another virtual asset as a voucher, "virtualLiquidity-350101", has to be "minted" to record the shares owned by you now, and it is transferred to your "UNI-V3-POS-350101" NFT contract.

<figure><img src="/files/k4dRiq2j6vaPRdPgNQvn" alt=""><figcaption></figcaption></figure>

Step 4: The actual NFT, UNI-V3-POS-350101, is minted and transferred to you, the liquidity provider, indicating your position/shares in the pool.

All the dashed lines in the chart show the connections between these actual and virtual contracts.

In comparison with adding liquidity, removing liquidity is more complex.